Thanks for the edits, guys ! They are both quite nice and it's always good to see some new interpretations from other artists. They point on some details i didn't see or give me inspiration.
@Cyangmou : i am not sure about your proportions either. I've seen this car many times in eastern europe and your edit doesn't remind me of it. It looks more like another car... but i can't remember its brand now. Sorry for the lack of informations about the use of this car. I need some more height in the upper part because if i put my sprites in it, they have to fit in it... I'm currently working on a game, but i'm not sure i will ever finish it, that's why i didn't bother to explain myself more.
@HarveyDentMustDie : Thanks man !
Here is a new version corrected a bit. I think it's kind of finished unless you see some big flaws.