"Skip To My Lou" is an American nonsense song; written around 1844 it was popular on the frontier. Traditionally it was sung to a "partner stealing" dance accompanied by a fiddle; a man would "steal" another man's partner, the displaced man would then wait his turn to "steal" another girl.
The word "Lou" is a corruption of "Loo," the Scottish word for love.
"Skip To My Lou" has been recorded by the likes of Pete Seeger and Judy Garland; it also featured in the 1944 film Meet Me In St Louis.
Suggestion credit: Alexander Baron - London, England, for above 3
"Piano Man" was inspired by Billy Joel's time playing at a piano bar in Los Angeles. The "real estate novelist" was a guy who always talked about writing a book, but spent all his spare time in the bar.
In Gary Numan's "Cars," the message is that cars lead to a mechanical society devoid of personal interaction. This didn't stop automakers from using it in commercials. Both Nissan and Oldsmobile have used it in ads.