The demand for fuel efficient vehicles is on the rise with higher costs of gasoline and increasing environmental concerns. To address these issues, a hybrid vehicle with the capability of running on multiple power sources has been developed. A 2000 Audi TT was converted to an AC electric vehicle with range extended capabilities provided by a small internal combustion engine and a hydrogen PEM fuel cell stack. This allows the vehicle to bridge the gap between the current gasoline based economy and a possible hydrogen based economy in the future. Using the Environmental Protection Agency’s (EPA) standard city and highway driving tests, the vehicle has a theoretical increase in fuel economy from 20/29 miles per gallon (MPG) respectively to 230/173 miles per gallon gasoline equivalent (MPGGE).

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