From Green Car Congress: "The Hybrid Truck and Bus Voucher Incentive Program will provide vouchers on a first-come, first-served basis to help California fleets purchase fuel-efficient hybrid medium- and heavy-duty vehicles... The program is part of the Air Quality Improvement Program established in 2007 to provide funding for advanced technology vehicles and equipment."
Here are a few thoughts:
1. Fleets are very smart to tap into incentive programs. The funding would probably not be there if federal, state, and regional funding weren't sought out, and something this comes from nonprofits and education institutions. Or a collaboration of public/private funding.
2. Air quality management is a very good thing, whether you believe in global warming or climate change, and whether greenhouse gas emissions should be the baseline or something else like nitrogen oxide, air quality will get the public's attention, and that of decision makers.
3. Hybrid technology has an edge over other green vehicle technologies and has been worming its way from the Prius to several fleet applications. Expect more of this to happen.