As far as I know, you can get a DUI for riding a bicycle drunk. But apparently, at least in New Jersey, you can't get a DUI for driving a zamboni while drunk.

A judge ruled the four-ton ice rink-grooming machines aren't motor vehicles because they aren't useable on highways and can't carry passengers. Zamboni operator John Peragallo had been charged with drunken driving in 2005 after a fellow employee at the Mennen Sports Arena in Morristown told police the machine was speeding and nearly crashed into the boards. Police said Peragallo's blood alcohol level was 0.12 percent. A level of 0.08 is considered legally drunk in New Jersey.

Peragallo appealed, and Superior Court Judge Joseph Falcone on Monday overturned his license revocation and penalties. Peragallo, 64, testified at his trial that he did drink beer and vodka, but not until after he had groomed the ice. However, he told police he had a shot of Sambuca with his breakfast coffee and two Valium-pills before work.

So by those rules, the bicycle DUIs would not be allowed either. I wonder what the rules are in other states. Plus, what if someone was driving a Zamboni down the street while drunk? Wouldn't they have to be able to charge them for any damage or deaths they caused? I don't see how that wouldn't be a DUI, though I suppose they can categorize it as reckless endangerment or something.