Car overheats, I turn it off to avoid damage. I can't turn it on again, I just get rapid clicking. I jump out to figure out what to do and notice shit loads of smoke. Opened the boot to find LOTS of smoke. Quickly emptied the car of all valuables, just in case.
All of this at one of the really busy junctions in Bristol, at rush hour.
Thankfully, some great people stopped and helped me, but she's currently parked up for the night.
No clue what the problem is, but it could be high resistance from crap connections.