This YouTube short video describes a man (let's call him Peter) who has placed Halloween pumpkins at the end of his driveway, only to have the pumpkins intentionally run over by car drivers, so as a booby trap, he places a large concrete-filled pumpkin at the end of his driveway. A driver then drives his car into the pumpkin intentionally, expecting to smash the pumpkin, and instead breaks an axle.
In the above scenario, is Peter liable for damages?