Plastic Bottles and Plastic Bags

From Reason:

The US currently uses 20 million barrels of oil per day. First we’re going to ban plastic bags, slicing away a giant 0.16% of that consumption. Now, bring on the plastic bottle ban, slashing a full 0.02% from the oil guzzling.

While all of this is certainly true, the oil connection to both plastic bags and plastic bottles has always been a secondary one. How about someone explaining how much landfill space would be available if consumption of these products was curtailed by 10%?

via BoingBoing