Ah, Austin, a city I've called home (or home-away-from-home, or home-away-from-home-away-from-home) for well over twenty years.
Which means that I'm entitled to feelings of "when-the-hey-did-they-build-this-thing?," even if I was just there a couple months ago. Driving from the airport to the Glenn at the Backyard, site of the first Austin Kid's Day, held this past Labor Day weekend, I was constantly amazed at the width of the freeways and the number of power centers I passed. (Of course, this being Austin, many of those power centers are tastefully tucked in behind some trees so they're not nearly so noticeable from the road.)
I take that brief detour (metaphorically) to suggest that Austin, while it might have been able to put together a music festival 20 years ago, it certainly wasn't at the point where it might have supported a long afternoon of quality kids' music.