Please note that the content of this book primarily consists of articles available from Wikipedia or other free sources online. M-168 is one of the shortest state trunkline highways in the US state of Michigan, extending 0.953 miles from a junction with M-22 in downtown Elberta to the former Ann Arbor Railroad ferry docks. It follows the south shore of Lake Betsie. The highway was commissioned in 1931 and served as a connection to the car ferries until 1984. Currently the road is being reconstructed by the Michigan Department of Transportation in preparation to transfer it to village control.