It's quite possible that you've never heard of Panoz, since it hasn't built a road car since 2006. It was never the company's main focus, as the majority of its efforts were applied to endurance racing cars. This included the original versions of the Deltawing experimental racer. But now they have a new prototype of a road car which will get a very limited production run of 25 units. The bodies will be custom, and you can specify whether you prefer a Ford or Chevy V8 under the hood.

It probably isn't going to outrun a McLaren P1, but the Panoz wins in the exclusivity department.