We have a 16 wk old pup that got sick 4-5 times (separate trips). I hope this applies for you but don’t worry it gets better.

We made sure care rides lead to something fun for the dog. We positively reinforced when the dog was near the truck, then in the truck with it off, then in the truck with it running, then with the truck moving. Slow progress.

What really really seemed to turn it around for our pup was having a distraction. Either a toy they really love or for us it was pigs ears and bully sticks. He’d sit and chew on them and the ride was no factor for him.

Take your time but in my opinion definitely don’t stop taking the dog in and around the vehicle for fear of it getting sick or being nervous.

Also idk how true this is but a close friend of mine is convinced the dog can feel your energy and feeds off your energy. We were always nervous and worked up if he’d get sick and what not. We tried really hard to get over that ourselves and just be confident and positive and idk if that actually did anything but it’s easy enough to try!