Somebody knicked a load from around my way a few years back, and another time I was driving along and could not make out what all the large black objects were scattered all over the road at regular intervals, presumed some lorry had lost part of its load, luckily I never hit any because a bit further up the road, a car had stopped and when I checked if they had a problem, they had lost there sump on a drain cover laid on the road. Some dickhead had lifted all the covers and left them laid on the road.