One day, after getting groceries, I stopped in the in-lot gas station to fill up on gas. As I came out, a young man, a bit younger than myself, that had been standing outside with a paper cup of water approached me. He asked if I could give him a ride. He was wearing work-ish clothes - black pants, black non-slip shoes, white polo shirt, and had a light backpack over his shoulder; he looked a little sweaty/tired. I hesitated, then asked where he needed to go. He pointed up the road, and said "you know the shopping center up that way, with the grocery store? I'm already a little late for work." There is a bus stop nearby that does stop in that area - about a mile and a little more away - but it'd take longer, and if he was already late... I eyed him and took a chance, drove him up there. (It's actually past my house so I had to double back a bit, but...) As we went, he explained he had JUST gotten the job yesterday, his car had broken down and he'd already walked this far (more than 5 miles) and had stopped at the station to get a drink of water before trying to push on the last bit. I asked if he could reach anyone to get him home after his shift, and he said he'd call someone from work (he didn't have a cell phone). When I pulled into the lot and stopped next to the restaurant, another employee came hurrying out the door exclaiming, "Oh thank god you're here." The guy pushed a couple of dollar bills in my hand despite my protests and ran inside. I hope he didn't get in trouble for being late.
I have been asked since then for rides, and have declined. First impression/gut instincts, et al.