I'm going to northern California this summer and want to rent a hybrid. Anyone find one somewhere? If so, what rental car company?

hertz rents hybrids out.

So does Avis. I rented a TCH for two weeks before I bought mine. Also a NAH down in Califormia for three days.

It is the ignorant among us that will eventually destroy us all.

check with this company's site:
www.evrental.com

I rented a HCH2 last year in San Diego. They were a little pricey at the time, but had no hybrid-rental competition then. Things may have changed.

You're in luck, lots of Nor Cal car rental agencies have hybrids. Avis and Hertz most definitely, but I think National is joining the mix.

In SF I've rented an Altima hybrid, and in Sacramento I had a Prius, both from Avis.

I've rented Civic Hybrids from Fox Rental every time I visit SF. They also rent Prius.

http://www.foxrentacar.com

This is from Michigan:

FEH at Enterprise Rental

2005 AWD Escape Hybrid
Best tank trip MPG 39.02 (scangauge II) for 402 miles on I-70, 10.3 gallons used over mostly flat terrain.

Best tank trip MPG 34.6 for E30 for 271 miles along I-80 in Indiana and Ohio.