Are Bike Corrals Coming to San Diego?
On the City’s Engineering and Capital Projects site, it appears that bike corrals may soon make an appearance in the neighborhood of Hillcrest:

By installing more bicycle parking amenities for the city’s growing cycling population, the City is (if at somewhat of a snail’s pace), making progress in meeting its objectives described in the Bicycle Master Plan to promote bicycle transportation which was adopted by the City Council last year.
For a better understanding on what a bike corral actually is, the following video from Streetsfilms is very informative: