This is local to me and I know of the gent in question. And oh yes, it is truly karma - my DH whooped when he read this story in the local rag.
What intrigues me is this: This man parks here on virtually daily basis as he runs a business in the nearby Historic Dockyard. Like all locals, he knows that the tide comes in and out - and all about springs and neaps and how far the water will come up the slipway. He irritates the fishermen intensely by parking in the way of their loading/unloading activities.
Does anybody share my belief that it may just be possible that his car was 'assisted' from its original parking spot, to one slightly further down the (very slippery, seaweed-and-algae-covered) slipway, closer to the encroaching waters of Portsmouth Harbour? Or would that be a scurrilous lie?