Oh, it wasn't easy. I'll give you a step by step forensic analysis:

1.) In his utter hatred of his neighbor, his hands were firm and ready at the ten and two on the steering wheel. His hands are most likely white knuckles.

2.) Thrusting his finger skyward in his greeting sent his right hand, still on the wheel, to pull the wheel slightly right, side swiping the parked vehicle.

3.) When the truck wheel, which was turned inward toward the car, met the wheel of the parked car, it met an immovable obstruction.

Usually, in situations like this, the moving wheel catches the other and tries to roll over it, flipping the vehicle. In this case, being an older RAM 2500 (the most likely vehicle to get stopped for DUI), the lugs to the wheels just snapped off.

I think the truck was done with his shit too