I got a new pup a couple weeks ago. She rides with me everywhere I go. I do a lot of driving for work. I started out making her ride in the passenger seat, but she would shake, foam at the mouth, and puke. I started letting her ride in my lap because she was much calmer. Now she sleeps in my lap when we ride and no more throwing up. Now I want her back in the passenger seat. When I put her back on the passenger side, she starts shaking, foaming, and puking. Any suggestions for helping her get over whatever fear she has of riding on her side of the truck.