BRIDGEVILLE, Pa. — (WPXI) – A piece flew off the top of an ambulance on an interstate in Allegheny County and several drivers thought it was a boat. “We felt the wind just blowing us side to side like any vehicle that has a higher roof,” said Priority One EMS Nicholas Richardson Richardson was transporting a VA patient who was just discharged. He was driving down I-79, near the Bridgeville exit. Then, he says he felt a big gust of wind. “The next thing I felt was a small gust of wind go inside the cabin,” said Richardson. “Because I got blown to the left, as I was recorrecting, I saw the cap of the vehicle flying off in my left mirror and then down off to the side.” It seems other drivers were extremely confused by what they saw. One driver who hit the cap thought it was a boat. Priority One says it has about five ambulances that are this style. After what happened Wednesday evening, they inspected all of them.