This is at least the 5th version of the 1.5 model, so I'll calling it the 1.5 Mk-5.
Industrial Design - Transportation pictures by kach22i - Photobucket
Mk-5
Mk-6
As much as I like the Mooncraft race car, I've been trying my best to find my own voice. And besides, the rear wheel humps following that concept might cause some compression of the flow over the top deck between the canopy and hump (as Neil pointed out).
I'll be drawing up some perspectives pretty soon on this, really should have done that sooner. Later I hope to model this in clay.
EDIT: Mk-6 has even simpler lines.