Why does these 50 cars get to waist a whole lot of gas by going around a track 500 times.
217943
well first of all, it is a sport industry that supports more than a few thousand jobs, plus the type of fuel that those cars use is not what you use in your everyday SUV, and if you are so worried about conserving energy-direct your efforts in a direction that would actually make a difference-direct it towards those SUV driving mothers that have a vehicle that will chauffeur around a whole soccer team, yet only one team member is riding in that one car-hello has anyone ever heard of car pooling, but no one will do this.  Direct it toward people that jump into their car to run to the corner grocery store to get 1 item, when they could take 15 minutes of their time, walk to the same store to get the same item, and save gas doing it-but they gotta drive there.  Direct your efforts toward the millions of people who drive to work everyday, when they could take a bus or carpool van, sure it isn't as convenient, but they are saving gas, saving energy, saving the earth.  In the end, people will tell you that cutbacks need to be made, that sacrifices need to be made, they just forget that they could and should be the ones to do so, they think it should be done by everyone else but them.
84456
Car manufacturers also own the towing services that come and take us to the nearest gas stations that OH, incidentally, the car manufacturers own too. So with this monopoly going on they gouge us with the gauge since we over estimate how long we can go especially on that last quarter of a tank of gas. So in short......it's a racket. A gauge gouging racket. :D
220214
No more than the Letterman Crew did for Danica ; they pitted ; when they need to and the Crashes just happened while they were Pitting ; Not sure I like the Rule ; but Hope Someone will explan ; why the Rule exsist at all ; if you pit on green you should be able to get back out depending on your pitt time and Place in Competition prior to leaving the track ; not all the way to the back of the Pack ; they know the Adverage Lap times prior to the Crash etc . it aint Rocket Science ; it just seems un fair ! How do you know when someone is going to sell their car to the wall ; is it a Team effort ?
183627
Yes,but it's providing downforce to stick car to track better.The car is going to cut the air,and you sure don't want it to go under,then car would lift up and get airborn.
213892
First they build all these fast food joints, then they litter the countryside with all the packaging from the fast food joints.  Then, they build all these stick houses all over and put the odd tiny park space for their children to play.  Then smog fills the air and everybody gets asthma, and hay fever.  And the overcrowded areas cause road rage and people are impatient with each other for not moving fast enough when they are in a hurry.
326447
750-850 depending on track.
139979
Back in the 1950's one of the oil companies actually sponsored a cross country race using stardard automobiles. The object was to get the best mileage. As I recall some were able to get upwards of 50 mpg.
376715
round up to 23 times. it is very close and sometimes car rides can stretch.
180640
with gasoline draws on
187449
Not all the fuel is consumed in the engine so some of the fuel mixture comes out with the exhause and since the exhaust pipe is hot if there is a big enough surge of unspent fuel it will ignite and give off a flame.
346762
From personal viewings, I would say it is very polluted especially in the United States (too many cars!) and other major countries.\n\nIn other countries where automobiles are not as plentiful, it is not as much a problem, but it continues to be on the rise.
210205
There are idiots in every race.
254729
Harder tires combined with resurfacing is making the track very different than last year. Look at qualifying order. Some of those guys got lucky and probably will not last the first 100 laps. I have a bad feeling that there are going to be a lot of big wrecks and a lot of upset drivers after this race. Plus, it starts when it's light out and goes well into dark, so that is also going to change the track conditions and car set up. Things will change during practice, too. It will be a good one to watch. I can't wait!!!
36601
seen these two car run, one the 350z won second time the other car won, take your pick, depends on some factors one whos driving it track temp barometric # tires ect
20315
One of the classic inefficiencies of cars of yore is the driveline design.  Take for instance a 1962 V-8 Impala with a hydramatic transmission and rear wheel drive.  The two-speed transmission always allowed slippage between the engine and the wheels, which caused energy loss in the transmission fluid being heated up in the torque converter during all driving situations.  They have cured that in today's automobiles by locking out the torque converter with an automatic clutch.  Putting a 90 degree angle between the input and output is also an energy sucker.  In more efficient front wheel drive cars, the axis of engine revolution is the same as the wheels.  This saves some energy as well. The final drive ratios of cars in the 60's was insane!  A cruising RPM of 3600 at highway speeds was not unheard of--and on a V8!!! Think of the gas going down the tubes.....  Modern cars reduce the final drive ratio and add overdrive to the transmission to reduce cruising speed RPM.  Less RPM means less air consumption and less fuel use.  In the 70's, they caught on and offered rear wheel drive cars with 2.73:1 rear end ratios to save gas.  This hurt acceleration, but was cheaper than offering a 4 speed automatic.  (It eventually happened.)  \n\nA huge determinant of efficiency is COMPRESSION RATIO.  Without computer control and injection, most cars of the 70's (BAD efficiency) had LOW compression ratios, say 8.0.  (And food for thought--the first spark ignition engines had a sorry compression ratio of 4.0:1.  How sad!!  They did not know enough about fuel chemistry at the turn of the century, so that's why the horsepower value of vehicles was so low back in the teens. A four cylinder automotive engine having 10hp in the "old days" with a displacement of 2 liters.  WOW!) New cars have all kinds of tricks to increase compression ratios while running on regular 87 octane fuel.  Current compression ratios include 9.0 to 10.1.  Computers adjust injection and spark ignition timing (to repeat a collegue's information already submitted) along with monitoring piezoelectrick "knock" sensors which make adjustments for preignition "pinging."  In the old carbureted cars, even ones with HEI ignition, there was no way to deal with the pinging. The sure fire way to prevent pinging (and serious damage) is to lower the compression ratio.\n\nAnother huge problem with cars of the 70's and 80's were the addition of the catalytic converter and other emission control systems like the huge drain from a "smog pump."  EGR valves put exhaust in the intake charge to reduce nitrous oxides, but that reduces peak combustion temperatures and the available power from the fuel charge.  Running exhaust through the manifold also made the intake charge hotter, reducing efficiency.  Old cars had fixed valve timing, which determines the relationship between power at high rpm and torque at low rpm.  Some manufactures today have adjustment on the exhaust valve timing, and some even adjust both the exhaust and the intake timing to increase efficiency and torque at low RPM while changing valve overlap for high rpm horsepower with a net smaller displacement.\n\nSome modern cars still include EGR, but the catalytic converter technology is much better and more attention to exhaust system design has helped increase MPG.\n\nThe actual energy used by the valvetrain has also been reduced by reducing the mass of the components in the valve train.  Using a cog belt to a cam riding right above the valves reduces the energy used to activate the valves.  That can really add up over the life of the engine.  \n\nAnother development was the inclusion of the electric cooling fan.  Belt driven fans consumed huge amounts of power from the engine, even if they had a thermal clutch.  Flex fans were supposed to reduce energy, but we are still talkin' in the multi-horsepower range just to move air across the radiator.  The modern c
210904
Busch series cars typically have less horsepower which is supposed to keep their speeds down, though on the superspeed ways where they have time to accelerate they can come close in top speed. There are some other minor details that are different. Namely the fuel tanks and the lenght of fuel line that a car can have etc. Oh, and since the cars are less expensive it makes it affordable for smaller owners to get involved. This also translates to smaller prize winning for each race.
364687
hahahaha, it's about using "stock" cars (that's what NASCAR means!) based on sedans with certain specs.  and if it went to sports cars, i'd much rather have a ferrari, lamborghini, or bugatti than a ford or chevy.