With people in a America using over a million and a half barrels of oil just making bottled water, it is very ineffective and expensive to continue to buy bottles every time you want to drink. So, making efficient and inexpensive water bottle that people can reuse would hep reduce oil use. The bobble does this.
This blog is short and simple. Gives a decent explanation of why the bottle is important. I would, however, include more information about the bottle it self, like the price and capacity.