The supercar company tries even harder to turn its SUV into a supercar. Despite having built a very well-known, V-12-powered SUV in the '80s, Lamborghini is a supercar company first and foremost.

Tight-lipped about the car it will bring to this year’s Geneva Motor Show, Lamborghini says only that it will be the fastest car in its history. Designer Filippo Prini says it will be “a big ...