I was on an airport run. The person I was picking up landed early morning, so I had to leave the house about four a.m. It was winter, so it was dark and would be until seven-ish. To get to the airport I'd decided on not going on the larger motorways, but to go a more direct but quieter route. I had been focused on just getting to the airport in the first hour of the journey, and what was about to happen didn't even cross...