Tony forces Gianni to drive at gunpoint. Gianni, behind the wheel, bails out of the driver's seat at what appears to be at least 30 mph. The car continues rolling without a driver and then crashes. The next camera angle shows Gianni on the pavement, slightly further down the road than the crashed car.
After Tony drives to the safe house he parks his car on the side of the highway opposite of the house and then walks up the hill to the house. Later Cannon drives down the driveway to leave the safe house, and inexplicably doesn't notice the strange car parked on the side of the road opposite their house. An experienced cop like Cannon should have realized there might be a problem and gone back to the house to check.