You see, at the time, I was travelling at 32mph in an area posted at 35mph. It was dark on the predawn route to Alliance before Daylight Savings Time ended. Either I'm a lot stronger rider than y'all imagine or it had a bit of a downhill grade. The motorist passed safely after honking, making a full lane change on the four-lane, median divided road. I have no idea why they felt it necessary to honk unless it was as an imagined courtesy of some sort.
To complete things, for any that might be interested, here is the final spreadsheet. Click on image for a much larger version.
|Click on this image for a "readable size" version|