At some undetermined date in the near future, Lake Michigan MAY freeze enough to bike or drive from Milwaukee to Muskegon, MI. Are you in? Bikes, and four wheel drive cars for sure. Snowmobiles, motorcycles, or even a plane to help scout a route would be good. 90ish miles, one way. I'm just saying, if it freezes, and you miss this chance, when will it happen again?
Feel free to invite more folks!