
going back to my experience with this and Brooke wasn't my first dog , just the first with a car issue.
Don't force him in any way to get near the car. Unfortunately I had the trainer at obedience say she would show me how to sort it out. I gave her the lead and to my horror someone who was very gentle and apparently knowledgeable ran towards the car dragging Brooke and then literally threw her in the car .
I was appalled and no it didn't help , poor dog was terrified .
Try different places in the car and see what he is like with other cars especially as he seemed to manage yours.
Make the idea of going near and in the car fun. playing near the car , treats/ his food. Meals never have to be in a bowl so use them for training
As others have said once in the car have someone with him to keep him relaxed. I am no expert but it sound like fear of getting into the car or maybe how he feels in the car.
Unfortunately I had the trainer at obedience say she would show me how to sort it out. I gave her the lead and to my horror someone who was very gentle and apparently knowledgeable ran towards the car dragging Brooke and then literally threw her in the car .
I was appalled and no it didn't help , poor dog was terrified . That wasn't repeated I can tell you
Would your friends take advise from a good positive trainer ( be careful as to who ) ? are they prepared to work on this as it took us months to get it sorted and in the meanwhile I had to pick her up and carry her to the car. 25kg of fcr is not funny
Obedience classes anyway would be useful given what you are observing . check out the apdt website for positive trainers in their area , most do 121 and all do classses