Here in L.A. there are such things as traffic, too, and inching along (or even moving by meters at snails pace) will drain out the battery (in far less than 2 hours for me). All the accessories, wipers, defrosters, radio, ipod charger, etc., as I understand, will use the dc-to-dc converter to suck off the big battery, not the 12v battery. Ordinary surface street stop and go traffic on a long gradual incline (5 or 10 miles) will also do that. Mine goes out of auto-stop mode around 2 (or sometimes 3) bars, not often down to 1.
(But I'm often in Seattle, and imagine that the 405 any 8am from Renton to Redmond would also drain out the battery?)
(But I'm often in Seattle, and imagine that the 405 any 8am from Renton to Redmond would also drain out the battery?)