Is there like a Nurburgring Camp out or something?
No, they're just having a version of a Demolition Derby. In a few moments, you'll see a buncha Porches destroy the tents.
I just thought of it... Who would go camping to a fucking RACETRACK ? Is it germans' idea of campsite? Like the one shown on TopGear but with more concentration camp flavour... "Yeees, zats goot! And an elektrik fence, jaaaa! Und we need more polizei wiz dogs jaa jaaa ! Lock me up right now!"