If you're still working on this one, madmax, have you tried doing any beveling or sort of 'sunken extrudes' on the windshield? Sorry if I'm not using the right vocabulary, because I'm sort of new to this form of expression, but it almost seems as if the windshield could use a little more definition... maybe a bit more of a 'sunken in' look.
Some big rearview mirrors would look cool too, I think.
