When we have pups they often have motion sickness when first in the car... some it doesn't bother, others have ongoing issues, but with age it gets better... that said every now and again, one will hurl..... I do make sure that they are fed way before a car ride and water limited... also make sure that they potty before a car ride. Since we go to shows and lure trials, they are in the car quite a lot.... and sleep 95% of the time....