Another Number, Another Letter: The Prospective Audi R4

Is Audi planning to expand the R line it introduced last month with the R8? That's the question posed by AutoBild, which offers its take on what such a beastie would look like. AB says it would be a direct competitor to BMW's prospective Z2 roadster, though with the underpinnings of an A4 and engine choices of the TT (and prospective 300 hp V6, natch), it seems like Audi may be slicing itself a bit too thin. Then again, thin is in.

Audi working on the R4? [Motor Authority]

Related:
More on the Audi R8 [internal]