Friday, April 29, 2:33 p.m. Brian Wynn “spun a doughnut” on his last day as Zamboni driver for the city of Evanston at the Robert Crown community center. Wynn, his wife Betty and other family were on hand to celebrate, and his coworkers threw him a party in the conference room. He learned to drive Zamboni at the old Robert Crown Center 19 years ago. The process of smoothing out ice with heated water, he said, is essential for keeping the ice safe and predictable for figure skaters (hockey players, not so much). The key to a good Zamboni drive, Wynn says, is “slow and just keeping an eye on what it looks like after you went over it.“