My car has speed-locking (where the doors lock as you drive away) unfortunately they do not unlock again! I know this is a design thing by Rover but it does seem daft they you have to double-pull the handle to get out of the car. It's not a huge problem but for passengers it's a tad confusing as they think they're stuck!
I was thinking about some sort of clever box that would, upon loss of an ignition feed, send a momentary ground signal on the wire that connects the central door lock button thus unlocking all the doors when you turn the ignition off.
Ideas on how this could be accomplished? I've no talent for building complex circuits so it's either got to be simple or someone else has to build one for me, lol!