John is correct, they arent street-legal in the US...

There are some for sale in Europe at the moment:
05/80 http://www.carclassic.com/stock.asp?StockID=101991
39/80 http://www.carclassic.com/stock.asp?StockID=101297
57/80 http://www.carclassic.com/stock.asp?StockID=102246