Power: 7.5 hp
Estimate: $20,000 – $25,000
Ever wish you could just build your own car tailored to your personal needs? That’s exactly what the mysterious Monsieur Grataloup did in the mid-1950s. His homemade three-wheeler had a 247-cc single-cylinder Villiers engine – allegedly cribbed from a BSA motorcycle – placed alongside the driver, where the passenger would normally sit (interestingly, it’s easily accessed from outside the car by way of a hinged panel). The nose looks a bit Citroën 2CV-ish, but the boxy roofline and stubby rear tail are unique. On that note, so is the Grataloup, as it’s the only one ever built.