Yup... this is a life saver in heavy traffic. Something I've almost completely forgot about after moving out of California.On HDA roads, it resumes driving by itself after being stopped for up to 30s. On an non-HDA road, it's 3s. You need to press the gas pedal or the SCC Resume button if you're stopped for longer than that. It's useful for people driving on highways with lots of traffic, such as LA (right, @saxman242?).