I'm looking at the sprite management now, and it's not going to be easy.
The first version of the sprite I made for the main car was taking 8 sprites, and I was planning on using at least 4 more to give the necessary details and colors. We're talking about 12-16 sprites just for the main car ! ... Then I started thinking about the number of sprites the game would need, and came with some very high numbers indeed. A spritesplit was going to be a necessity and even with that, I was not sure it was going to be enough.
Then I got an idea. And found a neat trick.
Can you guess which ?
I didn't look carefully at the image but i guess that's a double-sized sprites (using big 2x2 pixels). Which should reduce number of sprites 4 times 
I didn't look carefully at the image but i guess that's a double-sized sprites (using big 2x2 pixels). Which should reduce number of sprites 4 times
Correct.
But usually, the 32x32 sprites look very blocky, like this :
in the hires version the main problem was the wheels. maybe one could render the wheels in the screen 5? they are not much pixel mass.
similar one could have lights and blinkers in the screen 5
