It takes balls to put a concept car into production without toning it down too much. While it's good for the brand, sales don't always follow the enthusiasm. Turns out Isuzu had the biggest.
10.) Nissan GT-R
As CStyler puts it:
This is one of the few cases I can think of where the production version kicks the concepts car's ass.
Since then, the production GT-R has kicked other asses too.