These cars have been around the rest of the world for some time. Yes I know the 451 series is new but I drove the older Euro versions years ago. I think the real problem is that the "US Specific" parts - such as headlights, Us spec collision bumpers, airbags and the like are probably the bits that are hard to come by in large enough initial quantities to meet the demand. Bet it is less the additional cars produced than the US specific parts that are the real limiting issue.