One-way driving markets the polity that is Dutch
The government in the Netherlands has clarified that it is legal for driving instructors to offer lessons in return for sex, as long as the students are over the age of 18.
However, it is illegal to offer sex in return for lessons.
Transport minister Melanie Schultz van Haegen and Justice minister Ard van der Steur addressed the issue in response to a question tabled in parliament by Gert-Jan Segers of the socially conservative Christian Union party, noting that, although ‘undesirable’, offering driving lessons with sex as payment is not illegal.
There is more here, and for the pointer I thank Michael C.