When I am out of the city, I like having instrumental "new age" music playing. If you are viewing nice open scenery, the soothing music helps to enhance the experience.
I've used these as background in home videos I've produced and received compliments on them.
Now, as to pop songs with lyrics, I guess I like what I like whether it's in the car or not. The tunes you named are good.
If you ever plan to motor west
Travel my way, take the highway that's the best.
Get your kicks on Route 66.
It winds from Chicago to L.A.
More than two thousand miles along the way.
Get your kicks on Route 66.
Now you go through Saint Looie, Joplin Missouri
And Oklahoma City looks mighty pretty
You'll see Amarillo, Gallup New Mexico
Flagstaff Arizona, don't forget Winona
Kingston, Barstow, San Bernadino
If you get hip to this timely tip
When you take that California trip.
Get your kicks on Route 66.
Get your kicks on Route 66.