never seen anything close to this before! kinda neat..and check out the video of it running!!

http://www.circlecycleice.com/

I'll add to this threadhttp://aerocharger.com/

This company used to be down the street from my work, was allways cool to see their projects and them running snowmobiles on the street for testing.
They moved about ten minutes away next to a small airport where the police don't care what they run on the mostly empty streets so long as they don't bother anyone.
Interesting Turbo Design...
Turbo V-twin, Snowmobile, sideby side, anything!
they also do some for Rotary UAVs under developement with the USAF
Some intersting guys to hang out with

Also a few years ago there was an article in one of my Mustang magazines about a company that made rotary valve heads for the small block ford.

Plenty of people out there trying to re-invent the engine. Some great ideas too, I'd love to see what comes of them.

I've personally seen these guys run:
http://www.bakerengineeringmfg.com/B...hnologies.aspx
(The build some bad ass boats too http://www.ckmotorsports.net/MSProjects.html)

Also: http://www.grailengine.com/

-Rob

We are currently working on a couple projects for CK. Cool people!