For context I am in my early 40s.

When I was 18ish, I was running for a bus. I missed it by the most narrow of margins. (Also, the bus driver was kind of a dick for not sticking around when it was pretty obvious... regardless...)

As it just so happened, there was a taxi a couple cars behind that bus that saw me running for it and it driving away.

That taxi driver waved me in with nary a word, drove me a stop or two in front of the bus, and without charging me, dropped me off so I could catch the bus. (To be clear this was in an area where the bus route was LONG and the taxi driver obviously knew it'd be an hour or so before the next one.)

Ever since that day, for over two decades now, that random act of kindness has stuck in my mind. We literally never said a word beyond my panicked "THANKS" as I ran out at the end. No names, nothing, just wild gesticulations and gratitude.

Love to hear some more.