I used to teach LaTeX classes for the TeX Users Group starting when I was in college up until my mid 20s (so roughly 1989–1994). It was very challenging to find

I used to teach LaTeX classes for the TeX Users Group starting when I was in college up until my mid 20s (so roughly 1989–1994). It was very challenging to find companies that would rent cars to me when I would travel to various locations to teach.