In 1986 , Ben & Jerryâ s made its â Cowmobileâ . This was a Ben and Jerryâ s van to pass out free ice cream . In 1986 , Ben & Jerryâ s launched its â Cowmobileâ , a modified mobile home used to distribute free scoops of Ben & Jerryâ s ice cream in a unique , cross-country â marketing driveâ â '' driven and served by Ben and Jerry themselves .