That reminded me of the time in Seattle where a bunch of whacked out environmentalists were in plastic kayaks protesting an oil rig heading through on the way to Alaska.
They were chanting about the evils of fossil fuel use and such. Someone asked them about the hypocrisy of transporting their petroleum based kayaks to the Puget Sound in their gas guzzling SUV's and they said that it's OK because they are using the resource responsibly.