Phenomenal! Not only was the smog check itself fast, but they also send the information directly to the DMV. I got my smog check this afternoon and was able to register my car on-line this evening. No DMV. I went during lunch, so they said it would take a half hour. I'm not sure exactly how long it took because I went to an amazing Mexican place a couple blocks down on Pico: Gilbert's El Indio. If you've got a wait for your smog check it's worth the walk.