Most people who follow F1 know the USF1 project fell flat on its nose. Despite being first out of the box, so to speak, they did not even come close to having a car ready for the 2010 season. I am not even sure they could have produced a car for 2011! The problem was not their location in Charlotte, NC but the people in charge, if you can call them that. The 3 teams that made the grid have had their problems with Lotus at least able to get cars to the finish, albeit laps behind.
It turns out that the Virgin, designed without the use of a wind tunnel, does not have sufficient fuel capacity to go the distance in many races. That actually has no bearing on the fuel problem but is an aside. A major screw up. There is some question as to exactly whose fault it is but it appears that the designer, Nick Wirth, is taking resposibility through his design company. The actual amount of more fuel needed seems to be about 20 to 24 litres. Depends on reports how just much is needed. Basically we are talking 3 to 4 Imperial gallons and about 26 to maybe 40 lbs of weight. In F1 terms those are big numbers. ( Don’t check my math.) Relocation basically means a total tub redesign.