I can tell you that unfortunately after 4 years of commuting to ganma-ma's house that my daughter's Cole still has issues with panting on car rides. My Mother was with me one day & was afraid he was going to have a heart attack.
She had never seen anything like it before & was so concerned. He has gotten better through the yrs. It's a 45 min commute, but he never ever sleeps. He also watches tv & barks @certain commercials, jiggles, animations & most animals.
But we LOVE him so much & he is the most gentle soul @all other times.