EAU CLAIRE, WI (WTAQ) - Eau Claire County accident investigators say last month’s fatal crash of a car full of teenagers was caused by hill jumping. Fourteen year old Austin Gable was driving more than 80 miles an hour when his car went airborne, flying 177 feet, then flipped. Gable, his girlfriend, 13 year old McKenna Johnson, and 15 year old Marco Perez were killed. The only licensed driver in the car had let minors drive in the past. The sheriff’s department is forwarding the case to prosecutors for the possible filing of charges. Hill jumping is done by driving a car so fast it goes airborne when it crests a hill.