Today is the last day to buy tickets online for the San Francisco Bicycle Coalition's annual Golden Wheel Awards, a celebration of bicycle advocacy and street improvement leaders. This year's keynote speaker will be city supervisor David Chiu, whose District 3 includes North Beach, Chinatown, Fisherman's Wharf, Union Square, and Polk St. This year's honorees will be smooth pavement advocate Michael Helquist and SF Streetsblog, a "daily news source, online community and political mobilizer for the Livable Streets movement." The awards ceremony will be held at the War Memorial Building's Green Room on Tuesday, April 27 from 6-9pm, and tickets start at $75.