Let’s see…

$300M / $20k/vehicle = 15,000 vehicles

won’t even leave a dent…

It’s not even including the procurement cost.

Federal Leadership by Example

FEMP’s Transportation group aims to reduce the Federal Government’s petroleum consumption through increased AFV use and to lead the country in renewable energy and oil consumption use. The Federal vehicle fleet consists of 650,000 vehicles; approximately 20% (121,778) are AFVs.

http://www1.eere.energy.gov/femp/about/fleet_requirements.html

Hybrid Vehicle Sales 2007 = 350,000
http://www1.eere.energy.gov/vehiclesandfuels/facts/2008_fotw514.html