[Brett66]

Cars that make a fifty foot jump slam down on the ground with no damage. After hitting the ground, they can speed along at 100+ MPH.

Cars that are being chased can speed through busy intersections barely missing other cars going through.

Only cars behind the car being chased get hit by other cars.

The car being chased knows the perfect route to take to elude capture, there's never any traffic jams, never any sidewalks that aren't big enough to accomadate a speeding car.

Cars always explode.

Cars always launch into the air when they hit a car hard enough.

[Aeronaut]

Cars always launch into the air when they hit a car hard enough.

Also, the cars are required to roll in the air 360 degrees.