Losing interest

My dog used to love car rides get all riled up and excited now he doesn't get all excited he just kinda sits there and stares at you. I find it quite weird since he usually enjoys going on them? Is this something I should worry about?

How old is your dog? Is it that he is getting more mature and just isn't as exciteable?!! I think we need a little more info, but I shouldn't think it is anything too serious!

Where do you go lately for these car rides? Does he get to go somewhere that he finds really, super duper fun, like a really nice place to take a walk or McDonalds? He may just be maturing and like Gustav said, just not as exuberant. But if he associates the car rides with something really neat, he should still show some enthusiasm. It may just be a phase. LOL.