Faaaaast.
I was just moping along at 15 or 16MPH and saw something dark in my mirror. Turned to look behind me, and someone was reeling me in. He picked a bad day. I was feeling energetic and testosterone-laden, so I dialed my guads up to 400W and pushed the poor Liquid to 20MPH. Stayed there for the next 5 miles except when slowing for the occasional trail user and stop sign. I caught glimpses of my attacker but by the time I left the MUP I hadn't seen him in a mile or so.
Other than that, a perfectly normal commute.

60F, no wind. Sunny.