good idea, but impossible to move car between npc cars.

Was a fun little timekiller, and I liked the music. Keep it up!

The cars seem to drive along each other a bit too close to one another making it a bit impossible to swerve in-and-out of the traffic. Try implementing random health pick-ups (that look like a wrench) and other possible upgrades that decrease the chances of damaging the car to (armor).

Other upgrades can include acceleration, steering, etc. (to provide better handling of the car, making it easier to swerve in-and-out of traffic) Along with Nitrous Oxide ( N20/ NOS ) for temporary boost, allowing you to blast through the cars for extra points.

haha you can not even drive between the gaps with out hitting a car also you get blocked in so most of the time its a no go and you will not get far.

It was put together well, but overall fell short as far as playability goes.
I didn't really have any motivation to keep driving; there were no rewards, challenges, handicaps, etc, to keep it interesting and healthily along that "difficulty curve". In fact, I felt it was just too easy.
This particular concept has been done more than a bit, but I feel your version has potential, if you added powerups/handicaps of some nature, or milestones to pass where the player gets some upgrade or another, you know?