Dog duty

So while my DH is out hunting I get to keep his dog, yes he has his and I have my dog!!  So anyway I get into the car to run an errand and I decide to take his dog with me, I don't get even 4 miles away from home and the dog starts throwing up every where in my dash in my cup hold on the seat,?.    I love my husband but his dog is a pain in the butt & it's on my last nerve, he doesn't listen to me when he sees me he growls I Really want to give him away!!!!  He scares the crap out of my dog uggg where can we meet in the middle Help!!