Drivers have been advised on how to keep their car cool in the heatwave and it's all to do with the dashboard button that ...

The many symbols on a car dashboard practically form a hieroglyphic language of their own—and thankfully, the air conditioning button, “A/C,” is one of the more self-evident ones.

Yes, that's right, the snowflake symbol is just visual shorthand for your car's air conditioning system. Why a separate button, though? Pushing the snowflake (or A/C) button is what turns on the ...