8. Omega Lotus/Lotus Carlton
In the late ’80s, Opel and Vauxhall, GM’s European subsidiaries, presented a full-size family sedan they aimed at comfort and effortless cruising. However, then Lotus decided to turn it into a hot rod and one of the fastest sedans on the planet. And the first step was the engine.
The 3.6-liter six delivered 377 HP, which was massive for the standards of the day and the performance was thrilling, as well. A 0 to 60 mph run was over in just 5.2 seconds and the top speed was a record-breaking 177 mph. But they sold the car in just one color, which they called Imperial Green, a shade of dark green.