The people who drive those Priuses are all Prius novices, having no idea how to get MPG out of a Prius - all the Prius drivers who know their stuff use their OWN Prius. I would estimate there are about 1000 privately-owned Priuses at Google on any given day, but it could certainly be more. I've always thought Toyota should just roll a camera down Google's parking lot from the Google logo, past all the Priuses, and then just put up text saying, "The greatest minds in the world can't be wrong."

Once the PHEVs are setup, THOSE will certainly see usage by Hypermilers, and I'm looking forward to tweaking 200mpg out of them ;o) Or 500... or infinity... .

Yeah, the leadership at Google really is amazing. This is only my 3rd week here at Google and I feel like once a week Google does something that changes the world. The photo album I linked to includes "Stanley 2.0" which is the self-driving car Google invested in. This version can handle urban traffic and bad drivers, although it's not great with guessing what pedestrians are going to do.

Prius 2006, bought September 14: