EPA demonstrates hydraulic hybrid UPS delivery vehicle: Vehicle achieves 60 – 70 percent better fuel economy, 40 percent lower greenhouse gas emissions Release date: 12/17/2007 <a href="http://yosemite.epa.gov/opa/admpress.nsf/0/e1470abd2835dd10852573b40073a08f?OpenDocument" target="_blank">http://yosemite.epa.gov/opa/admpress.nsf/0/e1470abd2835dd10852573b40073a08f?OpenDocument</a>