 Next, in 1926, starting from New York City, he drove a Studebaker touring sedan to San Francisco in 86 hours, 20 minutes again besting the train by 14 hours.Records were set in Pierce-Arrows as well as a 68 mph salt flats run on an Allis-Chalmers farm tractor that he remarked was "like riding a frightened bison" before building a series of purpose-built salt flats cars.In 1925, Jenkins was hired by Pierce-Arrow to soup up their newly introduced V12 engine which produced a disappointing level of performance.