First commute - return leg. Traffic was light and respectful. Stopped at McDonalds at Wixom and Grand River for a rest break and had a double chocolate muffin and a medium Coffee Mocha. Sat in the velo and leisurely consumed both. Ended up chatting for quite a bit with a nice couple that wanted to ask about the velo. They looked inside and took pictures. After I resumed my return, it was fully dark. Somewhere between mile 14 and 15 some fairly large black or dark colored critter ran in front of my left side and I felt a good jolt and my left front wheel went over a good size bump so apparently I partly ran over whatever ran in front of me. I had seen it closer to the middle of the road and had moved over a bit more to the right but I guess it kept coming despite my bright and blinking auxilliary lights. Everything felt normal after that so I thought all was well and it was a fairly glancing blow but when I pulled into the garage and got out to check the lower front left had a large dent in it. I took pictures and then popped it out and took another picture. Doesn't look too bad but I'll have to figure out an appropriate repair. And apparently my HR sensor stopped responding fairly early in the ride home - bummer..