This week's photo quiz: street smarts.

Do you know about the vehicle we spotted this on in the Haight? The first person to know and respond--or to find out and give us a history lesson--gets a kiss on the cheek. Extra points for Marisa Tomei impersonations. In other news, it's Bloomsday: don your tweed, get some Guinness and whiskey, and start galavanting. We'll see you out there.