[fjasper]

Lexan is a trademarked name for polycarbonate sheet. It's softer & scratches more easily than Plexiglas (a trademarked name for acrylic sheet), but it has much better impact resistance than plexi.

On a different note, I'll be interested to see how the Miata project goes. I think there's some real potential for hypermiling the Miata.

I'm planning to put a grill block and belly pan on mine, and maybe some removable fairings around the wheel openings. Maybe I could justify buying a Speedster tonneau cover on fuel efficiency grounds.

There are so many options for body kits, it might be possible to find some that are aerodynamically good, or that could be used as foundation for good shaping.