If you've ever parked in a public space on a busy day, you may have noticed chalk marks on your tires when you went to leave.

Over time, the part of the tire that contacts the road surface wears away ... as demonstrated by the tire marks on every stretch of tarmac.

THIS VIDEO YOU’RE SEEING HERE IS FROM NEWS CHOPPER 12 SHOWING TIRE MARKS GOING OFF THE ROAD ONTO THE SIDEWALK. THIS UNUSUAL ATTACK HAPPENED JUST BEFORE 7 A.M. NEAR 14TH AND NORTH AVENUE.