Is There Any Good Alternative to Hydrocarbons?

I think we're going to use every drop of the hydrocarbons sooner or later. I would eventually expect natural gas to be pretty short in supply. Coal, our shipments of coal are fairly substantially this year on the BNSF but they were very low last year. Berkshire shareholders have been better off if you had continued to invest in capital light companies. Well we'd love to find them.