Though many companies have tried to relay the message that a concept car is purely a design study for a future variable, almost all of them have gone down the drains. Therefore I wish to make a post on what you consider to be the most futuristic looking car to date, that has gone into production. There are rules to this exception.
1. A retro design is not futuristic, as it relays the past, and not the future (aka, Mustang, HHR)
2. A car that is in limited production is not a futuristic car.
That's it. My Vote goes to the 2006 Honda Civic Si.