We're doing some cleanup, and I had to move a few things so I thought I'd do a mock-up.   The floorpan is from a 68 Grande Parisienne (bucket seat console car), and the seats are from a 70 2+2 rag (with the fairly rare houndstooth cloth).   I've had both for many years, and finally cleaned up the seats a bit, and stuck them on the floorpan.  The headrests are still downstairs.  

I don't think we'll get very far in this contraption, but we'll sure look cool.