In response to the original post, you will find this 'operation' in many countries of Europe. Often in the middle of nowhere curiously enough. However, stop at your own risk. There is usally a 'minder' at a short distance and they have no scruples about what they may do to you. Many of the 'girls' are from Eastern Europe and have been pressed into this occupation by either their families, or by traffickers. Their main customers are often the trucker from Eastern Europe.
This is not speaking from personal experience but from information from locals, who are not too impressed. Of course Aids is commonplace.
Need I say more??