Just wanted to thank you all again for the quick replies. I was just so scared when I saw so much drool...I've never seen a dog produce that much slobber! I thought I was bringing home a St. Bernard!
We made the second leg of our trip this morning with Karli and she did better. Not nearly so much drool and she only threw up a small amount once when we stopped to let her stretch her legs about 45 minutes in to the 2.5 hour trip. After that, she slept the rest of the way. When we got home, she peed and then ate/drank some. Sure hope we can continue to get her used to the car!
-C