Good job. I only have a few things to say, try and make your bodywork more like mine with more gradients and things. I might publish a tutorial on complete carbody making if I have some spare time.
No road car rides this low. If this were a real car, the underside would get scraped up on any rock more than about 5 inches tall
Lastly, why did you only use 2 cylinders? I would have used 4 personally.