HybridBob,
It sounds as though you have an ideal route for an HSD vehicle. Your driving technique will decide pretty good from impressive fuel economy. 30 - 35 mpg strikes me as easily doable.
I don't know what your volvo choice costs, but if it is ballpark to the HiHy, this seems an easy choice
Good Luck
R2-E2, 2G Prius.
Highway/City/Husband/Wife MPG:
56.5, as of 12/2005, 26K miles
Jac Nasser, Ford President: "We are planning to launch a hybrid version of
this car [P2000] within this year [1998]. We will also make FCEV available in
2004."