The date was marked, and the flying machines were built. Today was supposed to be the Midwest's aerial event of the summer, as 28 teams were set to square off in Red Bull's third ever Flugtag in Chicago.
Windy City residents had experienced this scintillating competition in 2008 and 2003, but it appears that their four year wait will have get a bit longer, as the energy-drink company cancelled this afternoon's contest due to "unsafe marine conditions" in Lake Michigan.
While Flugtag fans will miss out on a 2012 lineup that included a giant red frog and an ode to the popular kids' TV show The Magic School Bus, this does give us an excuse to take a look back at some of the wackiest designs from the city's previous events.
Without further ado, here are 10 of the best flying machines that have graced the Chicago skyline in the past, back when Facebook was still considered exclusive and G-Dub was in the White House.