This video was sent to me by Rob Sinclair a regular reader of the Digger blog who works for Volvo in Germany.
It shows the results caused by dropping 10,000 litres of water onto a car from the bucket of a massive R9800 hydraulic excavator
This monster machine is driven by two 1,492 kW/2,000 PS 16-cylinder V-engines, the machine has an operating weight of 793,000 - 804,000 kg and engine output is rated at 2984 kW/4000 HP. The Liebherr R 9800 boasts a 42 m³ bucket capacity.
This second better quality video goes into more detail about the experiment but is in German.
Takes a while to get going but it's well worth the wait