959: The 959, considered to be one of the greatest supercars of all time, began life as a Group B rally car before reaching production in 1986 to fulfill homologation rules. Production ended in 1988. The 959 was powered by a 2.85-liter twin-turbocharged boxer six-cylinder engine, producing 444 hp, and all-wheel drive. The 959 could reach 60 mph in 3.6 seconds. As an illustration of the car’s current collectibility, a 1987 959 Komfort with heavy front-end damage sold for $467,500 at an auction during Monterey Car Week in August. Models in excellent condition are now worth more than $1 million, while Sport models can fetch $2 million.