This happens all the time, and I don't understand why. Every time a manufacturer brings out a niche vehicle here, it fails. Even the PT Cruiser is having sales woes. If it's not a mainstream sedan or SUV, it seems like it doesn't stand a chance in the US.
Think of the Ford Focus SVT commercial where the parents take their son's car out for a midnight drive and get caught. It's a 4-door, fer chrissakes!