Man there are a few buckets of bs being tossed about in this thread...
I have a 2007 Camry Hybrid. *Fully loaded with NAV / Leather / SunRoof - Cost me ~30k with a 7 year 100k mile warranty, tax, title and license.
This car has similar power as the V6 powered XLE Camry and is priced actually a little less all the while being similarly appointed.
Mileage - So far my best tank is 44.5 MPG. My worst tank is slugging through 8" of snow and sub-zero weather and got 30.0 MPG.
Hiway mileage is actually a lot better than EPA ratings. If I'm driving the speed limit I typically get 36-37 or so on average.. Around town, I drive a lot on the electric motor and get over 40 MPG consistently.
I can fit (and have) 5 full size adult men in my car along with luggage - and still knock down some seriously great mileage. Do that with an Echo or Yaris....
Battery Failures - According to a press release a few months back, Toyota has not (yet) had to replace any of their batteries due to failure during normal use. There have been failures that were attributed to physical damage and abuse (running the car out of gas and running on the batteries until they overheated).. From what I understand the 2007 and later cars have firmware that prevents this and allows the batteries to be used only for a short time when the gasoline engine will not run.
I'm not carrying any bumper stickers or GREEN signage.. I just got super tired of getting super p!ssed at the gas pumps... I visit the pump roughly every 3 weeks instead of double the frequency before I bought the car..
Call me what you want - but I call me HAPPY right now... I think I made the right call for me at the time. Your mileage may vary.
And yes - I am interested in the Chevy Volt and think it is probably the pinnacle of automotive hybrid technology right now..