That is,air in your bike tire. It's shocking, really, in 2002, gas was about $1.35, now it's predicted to be $2.75 average for this year. Currently its close to $3 here, in the heart of oil land. The current problem is a switch from MTBE to ethanol. Things will get better though, and hopefully at some point we can switch to more ethanol (produced domestically) and less gas (from oil pumped out of raghead territories, mostly). Maybe this will be a gradual thing. I predict in 10 years this energy crisis will be over. I predict in 50 years we won't be using gas any more.