[ldenise]

poor little thing. sounds like nerves to me. My opinion : best thing you can do right now is have patience.
Notice the times that he potties and take him out close to the same times. the not eating part was the way that my Buckeye acted when we first got him. He was 2 yrs old at that time.
even now he tries to pull that "I am not going to eat if you don't hand feed me" thing. LOL They won't let them selves starve.
Buckeye is also one that doesn't drink very much water. Just make sure you make avalible at all times fresh clean water.
the vomiting is probably nerves also. Keep and eye on him.
Have you had him to the vet?
doesn't sound like he has had much experience riding in a car. he will probably get used to it if you take him very often.
I am happy to hear you brought him in from the out doors life and welcome to YT.