Castor
Trainee maniac
Until I got out of the car and shut the door leaving the engine running so as to get my multimeter, where upon it locked itself pretty much at the same time as I noticed the cooling system decanting on the drive.
Couldn't shut it down or open the bonnet.
For my sins I get to design process control systems for nukes and explosives. I describe this as "deterministically not letting something go bang".
The P38 is *designed* to go bang - either that or the designers were utterly incompetent.