When we first adopted Oreo, he wasn't happy about getting into the mini-van. It was a battle just to get him near the vehicle and getting him in wasn't any easier.
His first long trip in the mini-van didn't go well until we let him sit between the girls' seats. Since then, he has been a travelling dog. His seat is now in the back by the window. Whenever he's in the mini-van, he heads right there. Sometimes he sits there even after we've come home and gone into the house -- just in case we decide to go someplace else, he's ready.
Now we've gotten to the point that if the mini-van is outside and he sees it, Oreo will not go in the garage. He sits by the front door wagging his tale as if to say, "Nope. I'm not going in the garage. I'm going with." He's like a child who is afraid he is going to miss something.
It's really annoying when you are trying to get out of the house and you have to negotiate with the dog to get him into the garage. It used to be that any treat would send him happily wagging his tail into the garage. Now treats are just ignored as he sits by the door waiting to go into the mini-van. Eventually he does go into the garage, but he's not happy about it.
Of course, as with so many things, there is an upside to his wanderlust. Once in a while Oreo will get out of the house or off his leash. He doesn't go far. Usually he runs around the house like it's a racetrack. We don't chase him as we already know we cannot catch him. We used to hold a treat and call his name until he ran around enough that he was tired and came back. Now we just pull out the mini-van and open a door. He runs right in and plops down on his seat. Sometimes we drive around the block and come back. Other times we just drive into the garage and close the door. Either way he's happy because he got to ride in the mini-van.