I randomly hear a succession of beeps in my house, random times, random days.

Was starting to drive me absolutely bonkers.

Then I saw a neighbour up a couple of houses reversing their SUV into their drive - it was the proximity sensor beeping - they had reversed with their car so many times that they'd become masters at performing the manoeuvre so the noise was always the same: "beep beep beepity beep beep beeeeeeeeeeeeeeep"

How loud does that noise need to be though?!