Rich Rosenberg and three friends puttered toward Bryant Lake, their compact, brightly colored vehicles serving as motorized Pied Pipers. A car and motorcycle had been tailing them for miles. As they neared the shoreline, a group of gawkers gathered to watch as the odd little autos drove straight into the water.
Were they cars? Boats? Or what, exactly?
"It's not a good boat and it's not a good car," Rosenberg said, "but it's serviceable as both, just kind of gets you where you want to go."
Actually, they're amphibious automobiles called Amphicars, but long ago they earned the nickname "Smile-mobiles." Whether they're on land or sea, they rarely fail to evoke ear-to-ear grins.
"It's amazing how many people have chased me down on the highway and pulled out cameras," said Mark Mathiasen, a member of the St. Croix Valley Amphicar Club.
Even on solo sojourns, Rosenberg said, "you're never alone in these cars."
During the early '60s, Amphicars were manufactured in Germany for the U.S. recreation market.
They were rising in popularity — more than 3,000 were shipped; even President Lyndon Johnson owned one — but they slipped into obscurity when the company that made them folded in 1965.