As Image says, there is no benefit from becoming a citizen, I am married to a US girl, so will apply for my Green card once this visa starts running out (it is currently a 3 year visa, and can be extended for another 4 years).

I figure in the 6 years I have I will enjoy the car, and if by then it has to be exported I will look at Nobles or Ultimas, unless TVR have actually got their finger out and are selling cars here.