Okay, Jeff, I googled tidal power, and it sounds like they are trying to use traditional hydroelectric power technology, adapted to tides. In that case, Mexico should harness the Sea of Cortez, which has a huge tidal range.

But I was thinking that since most of the Earth is covered by water, and since most of that water is constantly in motion of some kind, there should be a way to harness all that incredible power without creating artificial waterfalls.

And in addition to the motion of the ocean, there is also the weight factor of the water that could somehow be used to generate power. No?

I don't think enough resources are being applied to thinking out of the box to come up new ideas.

As far as cars, I don't know why we can't have electric cars (or hybrids) that are self-recharging by having a small, efficient (and aerodynamically-styled) wind turbine on the roof. Seems like it would generate a lot of electricity for the batteries when it is going through the air at 60+ mph, and, therefore, extend the driving range of an electric car.

Maybe all this has already been considered, but I don't have time to google everything.