I go slower at night. Last night, it confused the hell out of me to round a bend and see what looked like 2 cars converging from top to bottom, almost as if one was coming up out of the ground

. I was distracted by it and forced myself to slow down and take stock. What it actually was, was a big puddle on the other side of the road (out of place as it hadn't been raining/wet), reflecting the light of the car driving down the slope towards the puddle. You tend to get these sort of optical illusions/what was that? moments at night and they're another reason to slow down a bit, as well as reduced visibility.