This looks very interesting Carloos
I noticed you didn't use a physics engine to simulate the car physics but I can judge from the video that you coded that very well
As Frank_G said, nice concept and blurry texture, and yes it would look allot more pro if it would have some oke textures ^^
About the arms, I think they look oke that way, I mention this because in your previous carting video's, everybody didn't liked the length of the arms but now it looks oke. So my question to you is, did you adpat the lenght
Overal, it looks nice

Cheers

Frazzle