The self-driving Google Cars put on a demonstration at the TED 2011 conference of the type of fast driving we weren't aware either Prius hybrids or autonomous Google Cars could pull off.

It's worth hearing the conversation above because, according to the spectators, it "Hauls ass" and then "Hauls big ass" and finally "Hauls big Prius ass." From the sound of braking/accelerating it does move in a surprisingly quick, mysterious way.

The video from inside makes the driving seem even more dramatic along the roof-top autocross course, enhanced by the marshmallowy hybrid's extreme body roll and the proximity to large concrete planters. Of course, a few have always known that driverless Prii can go this fast, we just didn't believe them.