I think a question to ask is whether you can trust the EPA mileage rating on the Camary. I'm not bashing the Camary or Prius by any stretch, but it just seems there has been a lot of discussion on how accurate the EPA numbers are for it.

GH has the Prius II data ranging from 45-50 MPG, 48 average. This from the 60/51 (55 average) it advertises. If the Camary (40/38, say 39 average) does the same, real world could be 33. GH HCH II average right now is 48. 15 MPG is nothing to sneeze at. This is all speculative of course (and please, no need for Prius owners to lecture me on how they get 60 MPG) - this is just an observation.

*** Retired after 65,000 outstanding miles ***