I beat my commute time record this weekend carrying a heavier-than-usual load. 8:45 for the 2.28mi run with a long slow climb at the start and a big short climb near the end. Never got it under 10 with a load before.

Laptop, tablet, uniform, a book, towel and various toiletries in two backpack-turned-homebuilt-panniers on a Trek 7100. I'm guessing the 8MPH tailwind helped a bit, but it's usually dead calm or 3-5MPH tailwind for that part.