Do random events respawn?
I was driving around Franklin's hood when suddenly two robbers asked for an escape, and I picked them up. To my surprise one of the guys turned out to be Packie from GTA IV. However, I botched up the the police chase that originally was supposed to be easy since I accidentally had a bad crash at the highway disabling the car (why do the fucking cars in this game get disabled so easily?), so we had to run on foot. A car accidentally ran over Packie and his friend, so they both died.
My question is, does this random event respawn? I really want to recruit Packie for my further heists, but I'm so far into the game now that restarting is out of the question should he not respawn. I did a bit of searching, and it seems half the internet says the random events respawn whereas the other half claims the characters are gone forever if they die.
So do any of you know if I'll ever get to see Packie again?