Nitrogen is the gas of choice for tires. Nitrogen has about 5 parts per million (ppm) of water where as compressed air has about 500 ppm. This allows for a more predictable tire pressure change during a heat cycle.
A pit crew is a group of people there to fix a racers car when something goes wrong. They also fill the car up with gas, change tires and make adjustments during the race.
Nitrogen
Nitrogen, because it is an inert gas.
No. A car will get better mileage with the correct tire pressure.
Most pro racing teams are using pure Nitrogen gas in their tires. This has the main advantage of minimising pressure changes as the tire warms up. It will also not feed a fire in a post crash fire.
Nitrogen and oxygen = Air
nitrogen
a engine and if you have gas (and not a flat tire d;=D)
Nitrogen is used because it has less parts per million of water than compressed air. It gives a more predictable pressure increase over a given tire temp.
A tire can effect your gas mileage by a lot. If you do not have a inflated tire you can get 2-3 mpg less than use usually get.
maybe the rubber in the tire expands more than the gas in the tire...but I don't really know.
low gas, flat tire, broken gas