Most people have a credit or debit card they can use these days, and not many rely on cash. I wonder why he had neither cash or cards he could use for petrol. It might be worth asking him (in a kind way) what his situation is and why he had to borrow the money. I would be curious if nothing else. Does he own a house, car etc. You will be able to detect if he is telling you the truth. If you feel he isn't then walk away.
Non slip/slip resistant bath mats
Have any of you got all electric cars? Pros and cons please.