Smuglers?

Things started to become complicated later in the day. The driveable path between see and sand became smaller and smaller.... And no fishing village ahead, nor behind us. So, we turned around....and after just a couple of minutes we came across two other cars heading south. We turned again and squeezed between them... They were local, packed cars. For sure they know where to go! Both drivers gesticulated with their hands, indicating us to turn around, and not to follow them.... But then where to go? So we followed them anyway. After a couple of kilometers they stopped. We had a brief talk again with them... But they didn't talk french, so communication was complicated. Anyway an old man, passenger of one of the car, convinced the driver to let us follow him.... So we drove ahead. After a couple of kilometers - we were only 6km north of St. Louis - a police man jumped on the beach and stopped us.... Well, we were the only one to stop. The other car drove away. The policeman explained us, that we cannot go further, and that we have to drive back to the next fishing village, and leave the beach there. Our conclusion: eiter the other cars were smugglers or the policeman didn't treat foreigners the same way as locals, or both of the above.....