This Prius owner modded his car into a custom 10 8-seater Prius Limo, while still maintaining 50 mpg fuel efficiency. It took him 200 hours of fabrication at a cost of about $10,000.

And no, it's not a photoshop job (if you read the whole thread, it started out as someone snapping a camera phone pic of the Prius Limo on the road, who got called a liar for photoshopping the picture, until the real owner of the car set the record straight).

Link (see Prius Chat post #124, see the rest of the thread for build pics) - via Super Punch