I had a similar situation today.I was running low on gas,well actually my wife brought the truck home with absolutely no gas in it.By the time I checked the gauge,I wasn't somewhere I wanted to be but I jumped off the Durham Freeway to get gas finding myself in a part of town I would not normally venture.It was just past dark and on my way back to the truck from paying for gas,a guy got in between me and my vehicle.He asked me for money and I dug in my pockets and brought my hands out,open palm like"I don't have any".What I did have was my Knife in my right hand,the guy turned and immediately walked away.It may or may not have been an issue,but better to be prepared.I don't have my CCW yet,but when I do,I will carry every where I am legally permitted to.