Why don't you use sprites for cars?
And I don't understand the sense of the game.
Why is there a big cockpit graphic AND a car on the street?
If using Turbo Basic, why not using a "faster" mode?
The car on the street is the player, I know it's not very standard, but this was used also in Burning Rubber on Amiga, so I'm not the first. And what "faster" mode do you mean?