Something I’ve been working on was going to model a background but I didn’t have any idea’s, may upload it again with a background, but until then here it is 
Nice model! I’d suggest you try to make the lighting a bit more interesting even if you don’t create a background for it.
You could fake some bounced light and add a bit of AO. You might also want to put a bit of dithering through the render panel to get rid of that banding issue in the background.
This could be a good piece with some tweaks. 
Maybe try an external renderer to get it more realistic?? modeling looks good though, good job!
OR cycles
Really good work! This car is so fast and powerful that i would put it on a race track in motion.
Thanks for reply, putting all your suggestions into practice now 