What do you think? I think its a bunch of bunk. Beside's imagine turning on a leaf blower when you want to give it the gas??:lol

http://cgi.ebay.com/ebaymotors/Cadillac-XLR-Electric-Supercharger_W0QQcmdZViewItemQQcategoryZ38634QQite mZ8053132397QQrdZ1

Interesting concept. If you can power a blower with exhaust gasses why not with electicity. How ever looking at the ebay gadget it looks like a leaf blower. I doubt if it could generate any noticeable boost. Takes quite a bit of power to pressurize the intake system. Look at the size of a genuine belt driven blower compared to this one.

Those have been proven to impede boost, not build any.