BTW 50mph is nothing, Adam Harper (one of the original RW judges who worked for Sinclair) beat the electric land speed record...

Adam Harper, the driver who broke the world land speed record for an electric vehicle by whipping along at a staggering 150mph, was on hand to recount the tale of daring.

Adam, 39, from Kent, was one of the first C5 salesman and is now the only world authorised dealer.

'Up to 100mph it's like you're running on rails, it's really stable,' said the dare-devil driver, who also performed the first electric vehicle stunt in a C5 by driving through a 70ft tunnel of fire.

'Then at about 110 to 120mph it starts getting tricky. At that point if a tyre blew up or something happened you would be surely dead.'