Can an ex felon be in the car with someome who has a concealed gun and license?

Can an ex felon be in the car with someome who has a concealed gun and license?
First, the term ex-felon is almost always misused. If a person is a felon, they are always a felon, unless the conviction and charges are later overturned and removed. Otherwise, the person is ALWAYS a felon.

Second, to answer your question, there is a concept known as constructive intent or constructive possession. A felon cannot have access to or control over a firearm. It is not illegal, techincally, for a felon to be in the vicinity of a person with a gun, unless the felon has intent to control the weapon.