Only one can of Coke zero per cart?
On the Chelsea facility tour at the DO I noticed in the soda loading area they only load one can of Coke Zero per tray, but (I think) 6 cans of Diet Coke. Yet the napkins they hand out are advertising Coke Zero ("Our route map runneth over. Now, so does our beverage cart. Now serving Coke Zero. Real Coca-Cola taste, Zero Calories!"). Is this a marketing push by Coke (i.e. is Coke subsidizing the purchase of this product) or is there just not that much demand for Coke Zero vs. Diet Coke?