Order a custom car design by David Elisson. If you want you can specify the stud width and other specific requests. We will get back to you about the price for your order.
DISCLAIMER: Designing a car in Lego and making instructions for it takes a lot of time so therefore, custom orders aren't cheap. Just keep that in mind when you do your request. But with that out of the way, I'm really curious to see what car you always wanted in Lego!