WEST VALLEY CITY, Utah - Two young sisters were involved in a head-on crash involving a semi-truck on a roadway in Utah Wednesday morning.According to West Valley City Police Department, a nine-year-old girl was driving the vehicle with her four-year-old sister in the car, when they attempted to get on the freeway in West Valley City."The young girl and her 4-year-old sister apparently snagged the keys to the family car while their parents were sleeping and set out on their own summer adventure," the police wrote on Facebook.The girls drove about 10 miles from their home in West Jordan -- via a highway and a freeway -- before exiting off, hopping a median and slamming head-on into a semi-truck.