Fast and very efficient! No need to even exit your car. Takes 4-5 minutes and is very reasonable. They post your Cleared Smog Certificate right away to the DMV

Open during the rain! 10/10. Quick. Fast. $22 (mention the coupon) for smog, $10 extra to register. Got my smog and registration done and left all within 10 minutes probably.

Easy peasy. Drive up, they come right out and smog check your car, and can even register it for you. Took 5 minutes. Nice guys.