When I was 19 I hitchhiked from the NW burbs of Chicago to south Florida. I think of the things that could have happened, but did not. I actually met some of the nicest people...and have a heck of a memory to go with it.
A few years later I did it again from south Georgia, to Omaha, NE...and again I met some of the nicest people.
So, would I pick you up?...hell yeah, you're adorable!! And I'm big enough, and scrappy enough that if you tried anything...I'd mess you up. Both parties are taking a chance.
If you looked like an unclean greasy thug....probably not.