Somebody at Nissan knows how to keep to a calendar, it seems, as the promised December US deliveriesof the Leaf began over this weekend. A big deal was made out of the first one's arrival, a shiny black number purchased by Olivier Chalouhi from the San Francisco Bay Area, which will be accompanied by Leafs landing across the other launch markets of Arizona, Southern California, Oregon, Seattle, and Tennessee. A second batch of Nissan's all-electric hatchbacks is coming on December 20th, with the company promising a nationwide US launch for 2012. In the meantime, Hawaii and Texas will be the next locales to join the fun early in 2011 and reservations will be reopened soon thereafter. Sadly, some "additional markets" are expected to be pushed into the latter half of the year -- guess Nissan knows how to use a calendar to mark off its delays too.