Here’s a look at seven of our favorite secret V-12 prototypes and other one-off models, and our take on how they could have changed the automotive world if they’d been allowed to enter production.

A 1999 Bugatti EB112, the last of only three ever built, sold for nearly $2 million at RM Sotheby’s Monaco auction. With just 388 kilometers on the odometer, the ultra-rare four-door sedan combines ...

The Bugatti EB110 GT delivers a rare and raw quad turbo V12 sound experience through onboard driving, dyno pulls, hard ...

Apollo's latest supercar gets a wild 3D-printed exhaust that looks like dragon skin - and it takes 123 hours to print each ...