It's quite a simple system. You can't tell other than the smell that you're burning vegetable oil.

He invented it for farmers so they could press their own oil and run their own machinery. Somehow along the way, the big oil companies took over, and that was faded out.

They're happy to get rid of it. Otherwise, they have to pay a waste hauler.

I don't think $65 oil is sustainable in the long term. There will be a reaction from either the supply or demand side.

The population shrinks due to fewer children being born and a continuing rate of out-migration. The oil industry, especially offshore, needs lots of capital but it doesn't need a lot of workers.

Without a shadow of a doubt, Exxon has the best management in the oil industry. They've been riding the momentum of higher prices for some time now, and they've got a pipeline of new opportunities that promises volume growth.