Relationship Between Gas Prices and Online Retail

Came across a very interesting blog Correlation between Gas Prices and Online Retail So is there a correlation between Gas Prices and Online Retail or is it just a coincidence? Now that Gas prices are falling, there could be a possibility that the extra expected dollar savings may have provided a boost to the expected disposable income and thus fueled the online buying spree. The other side of the story is that in case the fuel price goes up , the shopper would prefer to browse and shop online rather than drive to the retailer and spend extra cost on transportation. Thus I feel no matter whichever way Gas Price moves , the only way for Online retailing is going to be Growth. Happy Online Selling