So… I can’t help thinking of this song when I see/think about rumble seats. At least, I do when I see them on the antique cars.
Mackenna explains what a rumble seat is to Carson in the scene for today, but in case you’ve never seen one, this is a mother-in-law seat, aka a rumble seat, on the back of this car. (I believe it’s a 1907 Ford, but I can’t tell from this angle and don’t remember from when I took the picture.)
She also brings up the song.
Kabobbles Sing Along is just what I think when I hear songs. I sometimes see images when I hear lyrics, pictures or movies in my head. Sometimes I relate it to stories. My interpretation of the songs and lyrics are probably nothing like their original intent.