Not today but a couple of days ago I used it to tow my stricken Zafira off the motorway.
I then spent the rest of the morning reading up on how to change a knackered water pump and timing belt etc., and the afternoon doing it.
I think I was lucky the timing belt didn't break as this is what was left of a roller after the belt got so hot it melted the plastic. This was due to the friction of the back of the belt rubbing on the seized pump. I don't know how long it took for this to happen but I stopped the engine within a few seconds of the warning light coming on.
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The water pump seized as I was driving along, the only warning I got was a flashing temp light as the Zaffy has no temp guage, I didn't hear anything unusual and the belt had been done less than 60k mile before.
I suspect he either didn't bother replacing the pump, over tightened the belt which is easy to do, used a crappy cheap pump or both of the first two.