A little practice engineering

After valet parking at the Atlanta Sheraton left my lights on, killed my battery, and activated the security system that locked me out of the radio, Ned had to do a little roadside engineering on the way to Nashville (read: disconnect the battery to reset the radio). Kicker: the hotel still tried to charge me for valet parking! Ned let me challenge the charge and they did refund my parking fees, at least. Next question: why does a basic radio in a Honda Civic need a security
feature?