From this particular angle and the way in which you drew this it almost looks like it is moving. You should add something in the background like a light source so it looks like it is emerging out of the light or a city setting or maybe a road on the west coast of California near the beach.
proportion and perspective is cool too. so about the rim, is a little bit off... it is looking like the datsun would turn into the left direction. it is not that bad looking. the more I see is, that the wheelhouse is sitting driectly on the wheel. it is way to close. you need a little bit freespace.
I read your other answers, so I know about the problem!
I also know it personaly from a lot of beginners and people who started with drawing cool bodies, but got all problems with the rims. I learnd a lot with coping pictures by tracing them. I know, it sounds like "why should I do this?!". but drawing elipses freehand correct IS pretty hard to learn *g*.
some are using rulers and stencils. But I never used them, not even at my aducations. i prefer to copy or work completely freehand. *g*