So they opened his car door, and looked inside to find out who the car was owned to? Are cops allowed to even do that? I guess if the cop wanted to argue he could probably say that he was investigating the area in where a crime was being committed .
Absolutely Bro, a crime being committed, if the plates are run and the vehicle isn't listed as stolen then reasonable to assume the owner is the one committing the crime and the search is therefore warranted.