Don't use a money transmitter that operates out of his car
Legitimate money transmitters must display their Maryland license on the premises and show it to the customer if requested. The department warns residents not to do business with anyone working out of a car, parking lot and apartment or home that does not appear to be a legitimate business.
Here's the list of money transmitters licensed in Ohio. Meanwhile, PayPal is a licensed money transmitter in Maryland and 28 other states.
Download by state or territory a list of registered Money Services Business from FinCEN.