Mazda's 2010 Mazdaspeed 3 SEMA showcar just flat works. You can't buy one, but you could build one like it with readily available parts and a pile of cash.
Stinks they couldn't test it! Those R3 wheels look great but caused the car to sit taller and brake fitment issues.
Overall it looks great- very clean, though I don't think the feint custom designs on the sides of the car add or subtract at all. If I owned it I'd probably opt to have it one solid color. PS When is the US brining back white for the MS3?