Sure. The things that will continue to drive throughput predominantly are those same things that we have already identified in the past. Basically, two different categories; training our people, and then the equipments that we work with. On the training side, really good scheduling, having our top crew people in the right places in the line, having all hands on deck during peak hours, so the people aren't doing prep work, which could have been done before the rushes of lunch and dinner. Having an expediter next to the cash register at all those times, having great [knees and claws], in other words, having everything setup and ready to go before the shift begins or before the lunch rush brings and then continuing to focus on 15 minute periods of time, so that even if we don't have a line for an entire hour, we're still charting and encouraging. We are charting 15 minute periods and encouraging our managers to work on throughput even during shorter periods of time. On the equipment side, we're still working on our tortilla warmer and we anticipate we'll start rolling out some more of our new tortilla warmer, which will help us. We're still making changes to the POS stations, you've heard about the coin machines which are in all of our restaurants now, and we continue to work and test this handheld POS, which we're now going to roll out in 50 restaurants over the next eight weeks or so. Beyond that, our customers continue to become more and more familiar with how to use Chipotle, and they are more familiar with what they want, how to put it together, how to order, especially multiple orders and that's helping. Additionally, we're continuing to work on more and more business through fax or DSL order, which allows us to make the food off of the main line or a second make line, which keeps those transactions out of the way of the busy lunch line. We believe that we will continue to see gains and throughput. Frankly, this is a pretty tough time of the year to look at that, because our fourth and first quarters are lower transaction times of year, and so what we're working on now is making sure that we get everything in place, get the handheld for US well understood and well trained, so that when April, May and June comes we can really address those crowds with the best possible training, the possible equipment, the best possible techniques we can in order to continue to make those strides in throughput.