Funnily enough I nearly tripped over one of those little droids the other week as I was delivering three full cages of food to a local hotel, it's a nasty delivery as you have to push the cages up a bit of a slope from the lane.
Anyway I digress, the beer man laughed as he said he'd had the same problem the week before while delivering fifteen kegs and a full cage of spirits, wine and mixers.
Oh how we laughed when the potatoe man came round the corner and actually did go flying over the thing. 'funny little droid' I think he said...