Richard and Angela Hoy file their second weekly report on their several thousand mile trip around the US, and the hunt for Wi-Fi: This week finds our intrepid explorers, my friends, in Ohio and Michigan. They tried the city-wide Wi-Fi experiment in Grand Haven, Mich., which worked terrifically for them wherever they tried it. They're on their way to grandmother's house -- no, they're not kidding -- and stopping wherever they can find access en route. The picture at right is priceless: at Panera, the whole family got into the action.