That grey lotus is/was built by a guy who went by the name of Ronin on the internet. Got a chance to meet him once and talk cars when Mike Haddad chased him down one day a while ago with his Pontiac G8 family sedan then the group cruised on over to Neptunes Net for some lunch. Check it out:
http://jalopnik.com/#!5554704/550hp-...-any-questions
He had a Youtube channel named SVRonin for his in-car videos but it seems the account has been deleted. If you look for videos of Ronin Exige or SVRonin you should be able to find some. The in-car videos are awe-inspiring. There's one in-car video on the Jalopnik link.