What's the coolest one-off car on the planet?

What's it take to build a great one-off sports car? If you have to ask, your accountant will clutch his chest and fall across his blotter set. And yet, many have tried. What's the coolest one-off car on the planet?

This idea's from commenter BrtStInd, posted in response to a video of Jim Glickenhaus's Ferrari P4/5 Competizione at the Nürburgring. Thus, we're voting for the racing version of the P4/5, partly because it's a stupendous display of motoring chutzpah, partly because no million-dollar Enzo died so it might live (there's a Scud under there) and partly to take it off the table as a potential sweep. Sorry, tough love.

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