Ok now that we agree that a reasonable person could think a gun was in the vehicle try reading Terry V Ohio. It may clear thing up a little for you. It basically allows an Officer to stop and search a person that a reasonable person thinks could have a weapon. Also they have the right to search the vehicle under the vehicle exception. This in no way give an officer the right to shot we will get to that in a later class I have to go get my son from karate.