I've been out. Went over to a "shopping centre" (
) and parked in their subterranean car park. Very dark down there... made my way upstairs to find the whole place was experiencing a power cut
Bugger. Oh well, return home and.... aha, no change to get out of the car park. (I was going to get some cash from a cash point to pay for the purchase but of course none of the cash points were working!
).
Eventually found enough change in pockets and car to be released from this urban nightmare. Definitely one of those 'what if' scary scenarios.