I also think the circumstances matter. If someone's car is in the shop or gets stolen or whatever, that's unforeseeable and temporary and I am able to empathize. But if the other person has just chosen not to own a car or not to drive it during the week or something ike that, that is their choice and I shouldn't be held accountable for that choice.

I'm willing to help in either case but my patience would be a lot shorter w/ the person who is w/o a car by choice.