I'm speculating, but I'll bet the scenario goes something like this:
Red truck is driving along in the right lane at a legal, but somewhat slow speed. Driver of white truck comes up on him at a moderate speed, and swerves into the next lane to avoid hitting him. The governor, speeding excessively behind the white truck swerves to avoid it and goes out of control.
The red truck was on the should and partly on the grass. It looks like the white truck was in the right lane and governor in the left. The red truck veers back onto the road and back into the near lane which is occupied by the white truck. The white truck veers left to avoid being hit by the red truck. The white truck clips the governor’s vehicle.
Bingo, you got it.
The mental impairment?
Probably had a Corzine bumper sticker next to his Clinton - Gore bumper sticker.
Having the governor use the State Police Medevac helicopter has been a topic of consternation. Both parties (depending on who is sitting in the governor's office) either complain about the cost to the taxpayers and that it's sometime used for campaigning or they pontificate to the other party and electorate that by not using it they are saving the taxpayers money and are no different than the average taxpayer who must use NJ's congested roads, meanwhile the tax-saving politicians approve salary raises and budget increases in the billions and can't account for the billions spent, then brag that they are saving us money by not using the helicopter.