The problem with GipperDon's Altima and his friend's Priuses is their
driving pattern.

GipperDOn got his Altima on 6/01 and in little over a month drove
285 miles. This means a lot of short trips. A lot of short trips kill
mileage in a hybrid not to mention the intense use of AC in AZ.

When I drive my NAH after a long break the first 5 mins mpg
(from the Navi) is 18-24, then 36-44 and then I alternate between
55-60 mpg and 38-42 mpg as the battery charges and discharges.
This is all in city driving at about 40 miles per hour with minimal use of AC as
bay area is mild.

As a result my hand calculated average is 37.5 mpg. (I am at 2450 miles now in about 3 months) Now if I took 5 min drives most
of the time and then took long breaks in between so that the engine
cooled down, there is no way I could have broken 30 mpg.

So most city trips need to be alteast 15-20 mins to get decent mpg.
Else breaks between trips need to be short so that the engine does
not cool down in between.