I can't see any way around using oil in airplanes (for now). Large ships could be nuclear powered. Lawnmowers could easily be run on biofuels. These are just a few ideas off the top of my head.

I realize that we will probably always need to burn some oil to convert it to energy... which means we will always need a source for oil. This is probably all the more reason to use it somewhat sparingly. Ultimately, I'd like to see us free from foreign oil.