Ok - many of the cars on the ship were put on the ship in the on state, with the keys actually left in the car. What happens then is that the car doesn't turn off (it needs the key to leave the car, or someone to power it down on the console, for it to turn off), so 2 weeks or so later the ship arrives, and many of the cars 12v batteries are now dead, and many need replacing as you're not meant to leave 12v batteries in a flat state for a long time. Logistical nightmare I would imagine, as each car would need the battery charged/tested/replaced!