Welcome on the Highway!
You have the choice among four game modes: Free Driving, Escape, Checkpoint and WallRace

In "Free Driving" you drive on the highway as you like.
Flee from the police in "Escape" game mode. Take care that your car does not get destroyed.
When you play the "WallRace" mode you try to escape from the Wall as long as you can. The game end when you are passed by the Wall.
The "Checkpoint" gamemode is about getting from one checkpoint to the next one. The time you to get to the next checkpoint gets shorter and shorter.

All would be very easy if there would not be the traffic. The other road users don't care for one another so many crashs and traffic jams are regular.
Have fun with this game!