Henda is probably right.
Some guy's will pull up in a truck, knock on your door, and tell you that they just did a driveway job a couple of blocks from your house and had some paving patching compound left over. Didn't want to just throw away the patching compound, and wonder if you wanted your driveway patched and that it will last for years. And give you a great, hard to refuse price.
These are usually Irish Travelers (family gangs...like gypsy's). They move around the U.S. all the time pulling con jobs. They have their own sub culture since coming to America, probably a couple hundred years ago at lease. In the winter they head south. In summer back up to the other states. Not only con jobs, but can be in some heavy stuff also. Can be big on strong arm crimes, loan sharking, etc.
That patching compound they offer will be something like used motor oil or anything else that can cover up driveways, and appear to make it look new again. A good rain, or general wear, and it's all gone away..and your out money.
