Last night while driving home with about two miles to go, as I approached a roundabout I heard a loud "bong". It caused me a bit of a panic thinking that a door might have opened or the engine was over heating.

On looking at the dashboard I saw the outside temperature gauge had automatically come on showing 4c. At least I learnt something new about the car last night.

I think if the road had have been busy last night I might have hit another car trying to work out what the noise was.

I had it for the first time this year, and driving home after a 12 hour night shift

I thought WTF, then looked at the dash

Anyone notice that a stone bouncing off the inner guard tends to make a ridiculously loud noise?