I did something similar once. I got 9 miles into my commute before I realized it (gotta love headwind).

The irony is that after 9 miles of playing in traffic without touching my brakes, I turned off onto the MUP had a ****ing squirrel dart out in front of me. That was the first time I tried to use my brakes. They obviously didn't work. I kind of wish the squirrel hadn't escaped my wrath, but he somehow managed to slip out from under my front tire before being pancaked.