Actually, I have no idea btoz and maybe its the "Yank in me" that thinks we even have them in the AFL ? Having also lived in America for over 20 years and watched the NFL for many many years, the Golf Cart is never OFF the field it seems in that game.
That rule needs some looking at if thats the case, Dill and his Dipshites talk about "Player Welfare & Safety" these days like its the No.1 issue in the game, if so, an incident like yesterday's should never been seen on a Football field again.
Stop the game, get the injured player off the field ASAP for treatment and assessment, surely that can be organised quickly and safely with the aid of a motorized vehicle over a guerney/stretcher I would think.