I believe they will be in demand, however Toyota has said they plan to make 1MM hybrids by the turn of the century (which is not far off). Prius has been a fairly low volume auto. The expectation for Camry is 40,000+ hybrid cars per year. I don't expect invoice pricing, but I believe when the tax credits go away they will have to discount them to a competitive price to sell.

I don't hink ANY car would be a good investment if I planned to only keep it 1 year and I had to pay MSRP on it, which is what I got as your plan from your posting