Cheap Energy

I recently went to the Toyota dealer to check out the Prius (hybrid car). The dealership had one ‘demo’ car which they don’t let customers testdrive on the weekend (!?). No brochures. No info. Just a $500 deposit to get on the 6+ month waiting list. I’ll wait without paying.

Oh, I’m also trying to get some info on ground heat pumps for my home. Trane has one , but I don’t know anything more than what they have on their site.

Any other high-tech ways to save energy?