Try and discreetly snap a picture of the car's plate with your phone.

Also, human trafficking is a real and larger problem than you may realize! If you're going to hitchhike...be armed....do not accept any beverages from ANYONE...and gain some self defense skills before you go. This goes for the young guys too. Some of the trafficking is for body parts. Gross I know but it's the truth.

Dude, I would freak out if my sister wanted to do this! The world is so dangerous right now. Great article!