I couldn't find spec's on Honda's site before posting. From the pictures it didn't look like any of the current models were hatchbacks & the CVCC was the only one I remebered.

The Prius can carry four relatively comfortably plus cargo (about like the 80's Ford Bronco with the seats up for cargo IIRC). Basing multipliers on EPA test numbers for 2007 model year, your friend would probably be able to get 80/64 mpg city/highway.