[Lee Stewart]

The Northstar V8 engine was one of the main reasons to choose a Cadillac in the 1990s and 2000s, so having two of them should offer twice the appeal. That was the thinking behind Twinstar from Florida company Mosler, which as the name suggests packs a pair of these smooth 304hp motors.

Using a 2000 Cadillac Eldorado coupe as the base, it retains its normal front engine but adds a second engine in the car’s trunk. With over 600hp from the two motors, Mosler claimed 0-60mph in 4.5 seconds and a 207mph top speed, though it would be a brave driver who took this luxury coupe to its maximum to find out. It’s thought five were made and today you’ll pay from around $40,000 if you stumble across one in good condition.