Be it free glasses, gift tokens or loyalty schemes, you may think you've seen it all when it comes to the endeavours of petrol retailers to lure you into their forecourts. Well, think again.

The Margin was interested to read that petrol stations in western China have taken to offering sex with a tank of gasoline. Some of the more than 1,000 filling stations in the region of Ningxia have been luring motorists with the services of a prostitute, along with petrol and diesel oil.

"Sometimes there is no clear dividing line whether the customers come for gas or sex, but the sex service is based on the condition that you have to buy petrol first," said China OGP, which is published by the official Xinhua news agency.