That reminds me of an incident many years ago when the local firm I worked for had a "fleet" of mini vans. Me being the youngest I always had the old one, it was forever playing up and the jump leads were always lying on the floor somewhere. One day the bosses brothers van ( A Simca ) was in for some surgery ( 100th gear linkage repair!!!) and he needed my wheels, so I was dropped off at the site, all my gear was removed from the back and off he goes.
The gaffer came to pick me up later that night and said ffs don't ask Les what happened with your van today. Me being the youngest, had to ask when we got back to the workshop :wink2 . It turns out that when he got to the junction in the middle of town, a section of ss tubing that had been in the back of the van with my tools had been liberated to roll about unchecked
and when he stopped at the junction it had rolled over the small lip behind the seat and landed on the battery terminals that were not covered because of the performance in starting it most days. He, on hearing the crackling
and seeing the welding type arc flashes
behind him had decided to bale out at the main junction. Just like a scene from back to the future.
Cheers
A.M.
Fizz, fizz burny, burny, plastic melt, battery melt, undertray melts, FI light comes on and engine dies 
. I am a lucky bast as the only visable damage is two holes in the undertray and a unsightly melt on the battery top. Prob a SP only fault as the battery sits on its side with the terminals pointing backwards. I have ridden a good 200+ miles since and all is well.
