WESTMORELAND COUNTY, Pa. — (WPXI) – A car carrier caught fire overnight on the Pennsylvania Turnpike. The fire happened in Mount Pleasant, Westmoreland County, around 2:30 a.m. 911 officials tell Channel 11 that the tractor-trailer was damaged by the flames. So were some of the cars it was carrying. A photo shared by the Youngwood Volunteer Fire Department shows some of the cars were destroyed in the fire.