They're about to hit a volume discount from Panasonic, according to the earnings call. There are a number of other efficiencies they've identified. On the call

They're about to hit a volume discount from Panasonic, according to the earnings call. There are a number of other efficiencies they've identified. On the call Elon recounts some anecdotes about parts suppliers not being prepared in 2012 for the volume of orders, inefficient tire shipments, etc.