“Cute, but NO 75 year old would know what a jalopy was, nor use that term today, unless she watched old movies from the 1930s!”
I’m a decade younger than that and grew up hearing jalopy used regularly. I still use it.
Heck, my spell check even recognized it!
I saw “Kilroy was here” on many of the old WW2 movies that were made in the 50’s and 60’s. I never knew about the hands and nose drawing until I read about it long after I reached adulthood.
Perhaps the use of "jalopy" depends on where once was born & raised.