The bowl of noodles was beyond anything I've ever seen. If something should happen, the first thing that guy is going to do by instinct is try to avoid spilling the hot noodles all over himself. This could result in damage, injury, or death to himself or another.
I would have no compunction whatsoever about calling the police and reporting him right there and then. Get his plate number, pull over (if only to just get away from him), and nail his @r$e.