[OldMagazine]

I once met one in a medium security prison. About 35 years old - did not know for sure. Born in America. Never went to school and could not sign his name. Claimed that he never had a Soc Sec number.
He said that his favorite scam was putting used motor oil on blacktop driveways. He said that he recognized fellow travelers by the particular type of truck that they drove.
I do not remember what his criminal charge was.

[peeps36]

There's a good movie called Traveler with Bill Paxton and Mark Wahlberg in it. It shows how they live and scam people. They used old crank case oil to do driveways and roofs. The first good rain storm would leave oil all over the place.