Actually gas prices in places besides the US does matter to Americans because it gives you an idea of just how much your taxes are subsidizing your gas.
You are paying the same amount for gas as we are in Canada possibly even more only a big chunk of it comes out of your taxes. The main reason the US government does this is to help the economy. If all of a sudden all the truckers especially had to pay the actual unsubsidised price the economy would take a huge hit.

This is one of those facts about the US that people in other countries all know but most Americans don't. It is also one of the reasons europeans in particular think Americans are crazy. The idea that you will pay taxes so some people can drive hummers and Vipers but not for Medicare seems crazy ,at least to anyone who has not driven a Viper <img src="/ubbthreads/images/graemlins/bowdown.gif" alt="" />