My VW TDI(Turbo Direct Injection) diesel engine gets 43 mpg with and AUTOMATIC. The 5 speed version gets 50+. and that is real world mpg. Once I can start my own Biodiesel production, I will be green, and still get "MOMILES". Hybrids are not as efficient as advertised, and are slow. Hydrogen is still not practical, but Biodiesel is something we can do NOW.