dog anxiety

i have 3 boston terriers and one really took up with my now ex live in girl now every time i go to leave she freaks out a bit fortunatly i work overnite and i am able to take 2 dogs to work but since girlfriend isnt around no3 wants to go to i say no problem but after a couple of hours my 1 pup starts getting nervous then starts puking matter of fact 3 times on the way home tonight and i left work early because i felt bad for her any suggestions nothing crude these dogs are my kids thanks
just wondering, was this the dogs first time in the car awake? Maybe it got motion sick