Currently, my type of "service" consists of:

1-2 mi trips, 70%
5-10 mi trips, city/hwy mix, 30%

Under my type of "service," is it true that there shouldn't be any significant fuel economy differences between the Prius and the HCH II? I ask as the HCH II will offer a $2k price advantage if, and when I come time to purchase.

In addition, under my type of service, is a 35-40 mpg average on a regular basis (and throughout the life of the vehicle) a realistic or unrealistic expectation? Over a 150k period, if I can average 35 mpg...I should be able to reduce fuel costs by about $3k compared to a gas-only Civic, which I'd assume obtains 25-27 mpg under my type of service.

Thanks in advance!