Eight days and four fuel stops were all that was needed for brothers David and Alexander Madgwick to cross the entirety of the U.S.A. in their clean diesel
Jaguar XF. The tandem trekked across 11 states from New York to Los Angeles and crossed three time-zones. The 2.2-liter diesel XF required only four trips to the gas station as they achieved an impressive average fuel-economy of 62.9mpg on the 2,884 mile journey.