200-Year-Old NASA-Tested Engine May Be the Key to 100 MPG SUVs
In his attempt to develop the next generation of experimental powertrains, Texas inventor Josh MacDowell has gone way back in time. By pairing modern hybrid batteries and electric motors with a 200-year-old design called a Stirling engine, MacDowell claims to have created a a range-extended electric vehicle powertrain he says gets 100 miles per gallon in a small SUV. And he's already nabbed a patent for it.