Students at Avonworth High School watch as rescue workers extract victims from a mock automobile crash in the school's parking lot on Monday. The goal of the event was to keep students from getting behind the wheel while under the influence or getting in the car with someone impaired. (Photos by Steve Mellon/Post-Gazette) #Pittsburgh #PGH #412 #Avonworth #AvonworthHighSchool #mockcarcrash #PGPhotos