You are correct, except he says that they meet at a place, and then his wife switches cars in order to bypass the fee. Without that switch, the other vehicle pays the fee. That is where the difference is. Look, people are going to do what the want because they think they are entitled to do it.
We have handicap plates on our car, and a placard for when we are in a different vehicle. So by your definition, we should be able to give our placard to someone else to use in their vehicle, so that we can park close together in the parking lot. That way, they won't have to ride a tram, but can park close enough to walk.