There is no overlap in the Venn diagram of people who say "on route" to mean "en route" and people who are my friends.

@levisan i dont say it, but it's literally the same thing only in english, so i wouldnt really judge someone for it. plus around here all the big highway reststops are called "ONroute"

@sabbatical Oh, I don't judge people (or at least I try not to) for using it… it was just an observation haha