Polaris makes an electric version of their Ranger as I recall. I've never seen one in the wild. My Ranger has hit 54 MPH before, but that was in a straight line. No way I was going to deviate from a straight line. It gets squirrely in corners at 20 MPH. I would be sending it to the scrap heap if I tried a corner at 50+ MPH.
A RZR on the other hand, that would be cool.