Had the car booked in for a scheduled service last week. As always I turn the master switch to OFF before handing the car to anyone, and generally they don’t pick up on the fact that there’s a monster set of air horns lurking under the front bumper (they’re very well hidden). The only thing that’s a dead giveaway is the GW Manual Valve next to the seat. Blackview camera was recording to capture the fun 
First to be tempted by the ‘strange’ handle was the car wash guys. Luckily they only yanked the first stage of the valve and that line is regulated down to around 100psi. The main button (which enabled the steering wheel to trigger the horns via the solenoid) was only picked up later by the mechanic. They let it rip with a full 200psi burst inside the workshop - much swearing and looking under the hood ensued 
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