9. 1955 Mercedes-Benz 300 SL
The Mercedes Benz 300 SL was inspired by the race-car W194. It featured gull-wing doors, fuel injection and it was the world’s fastest car that featured advanced technology for the mid-1950s. Under the hood, the modified V12 engine was used and produced 215 hp. Today, the 1955 Mercedes 300 SL is one of the hottest collectible models with prices between $1 and $2 million.