Here is a non-exhaustive list of pit bull attacks on cars and other objects made of heavy plastic, metal or rubber
2013 FL Pit bulls attack a Yaris to get to a cat.
2012 AL - Pit bull mastiff mixes tore apart a minivan in an attempt to rip apart and kill a cat that took refuge under the hood.
2012 CA Kitten hid in a minivan to avoid being torn apart by four pit bulls. The pit bull tear apart the minivan, puncture a tire instead.
2011 NM Pit bull tore off Volvo's bumper
2010 TN Ambull tears bumper off police cruiser. Notice normal dog breeds barking, but not ripping the bumper off.
2010 PA Two pit bulls rushed and mauled a student driver's car doing thousands of dollars of damage to it.
2010 Unbelievably aggressive pit bull tore bolts out of concrete, bent chainlink fence and destroyed several kennels and cage doors in addition to killing tons of animals.
2009 TN Police officers responding to a dog at large call must taze a pit bull to get it to stop attacking their police cruiser.
2009 KS After two pit bulls attack two teen joggers, they bite through and flattened two tires of a responding volunteer firefighter.
2009 NC Pit bull deflates all four tires on a police cruiser.
2009 TX Pit bull chewing up sprinkler heads
2009 AR Police were called by the owner of a car two pit bulls were attacking.
2007 GA Pit bulls attack car in driveway
2007 TN The two pit bulls that killed Jennifer Lowe had previously attacked two police cruisers when police responded to a call about the pit bulls attacking her dog.
2004 AU Police shot and killed two pit bulls that had attacked their car, biting through a tire and tearing off a mud flap.
All extreme attack posts:
List of Pit Bull Attacks on Police K9 dogs: Extreme Attack