1957 BMW 507 Coupe
The iconic post WWII sportscar from BMW was originally designed by Albrecht von Goertz and it is admittedly timeless. But if I found one, I’d modify it. Thus the elongated rear trunk profile, modern wheels (BMW Z4 concept) and tires, plus a deviation with the roof structure itself to make it sexier. Imagine some modern M-derived drivetrain beneath it as well! Of course nobody would ever build one of these given the price of a 507 coupe today… but at least I know how I’d want mine.