The FEH has already been in usage by several departments of our Federal Government for several years. This link will reveal there were many flex-fuel and alternative fuel vehicles purchased in the year 2005! http://www.gsa.gov/Portal/gsa/ep/con...Basic.jsp&P=MC

2005 AWD Escape Hybrid
Best tank trip MPG 39.02 (scangauge II) for 402 miles on I-70, 10.3 gallons used over mostly flat terrain.

Best tank trip MPG 34.6 for E30 for 271 miles along I-80 in Indiana and Ohio.