Made it a bit more curvy

it's amazing
but one thing you need to fix is how flat the top parts look
also something about the wheels looks weird. maybe there are too many edges to the circles? or maybe there aren't enough. idk
Outer circles uses 18 edges, the brakes are 12 and inner circle is 6.
Could you elaborate on the 1st part of the post though, what do you mean by top parts? The roof? The trunk? The hood? Or all of them? Or you meant the wheel?