You could ask Mr. Bean (rowin atkinson)
He crashed his on a british highway a couple years ago.
They are street legal in england, but it costs so much to certify a drivetrain and adhere to saftey standards that they are not legal for retail sale in the US. There are a couple floating around with Exotic Titles, but they have to be restricted to meet Federal Air Quality Standards.
I really wish they had one as a prize car in GT3, but NFS got the F1, Porsche, Lamborghini, and a the M3.