Beetle derivative pr0n, Supercar pr0n, elderly rocker, and Caravanists! Oh, and Jeremy and James inadvertently get involved in dogging without using that word, but dropping enough hints...
Dogging started in the later part of the 20th century, in the UK, with locations mainly being public car parks and lay-bys (usually on quiet country roads) with activity normally taking place after dark. Doggers would usually leave their interior lights on in their cars so that other doggers would know that they too were doggers. Some flash their headlights at other cars or flick the interior light on briefly.