Rolfe
Adult human female
When I saw it was a shotgun, and the amount of casualties, my first thought was "while he was reloading, why didn't some guy run up and beat the crap out of him?"
But it seems he was driving around as he was shooting people, hard to stop unless you're Arnie and can punch through windshields.
Yes, it was the vehicle that made it such carnage. He shot a couple of people, then drove off, only to reappear somewhere down the road and do it again.
Rolfe.