More importantly, the image allows us to see the supercar had no brake calipers. The rumor mill talks about the stopping hardware having been removed in order to be painted in Orange, a hue that would've completed the Gulf (ironic coincidence, right?) livery that the machine was being dressed in when it went for a water-cooling session - couldn't help the bad joke.
Even so, the emergency brake, which activates the drum brake that sits inside the rear wheel assembly, was present. Which brings us back to square one, which is human error.
The irony of the Gulf livery application process happening to be the trigger for the mistake to be made is greater than the connection to the water. You see, after all these years in which the Gulf theme has brought tons of benefits (most recent ones have been strictly visual, for street cars), Porsche's racing sponsor from back in the day ended up being linked to this unfortunate situation.
P.S.: 2016 seems to be the year of the supercar submarines, at least when it comes to VW Group jewels.