Good write up.  Too bad the focus remains on the biofuel technofix.  Goes to show the "market's" skill in determining the future of transportation energy.  

(needless to say, I am not holding my breath on a breakthrough).   Electrification seems the better course of action in my opinion.  Work on improved battery capacity, dual mode guideways (where vehicles retrieve electricity from a rail for longer distance travel and use batteries for the first and last 5-15KM of the journey) and mainline rail electrification.  Save the remaining fuel (petro- or bio-) for heavy equipment and airplane usage. Use a mix of sail and fuel for transoceanic shipping.

Of course trying to make a profit on these concepts may be harder.  

I cant wait to see a wind powered super tanker coast into port...
Well, a German company is seeing a rosy future in wind power assisted shipping, essentially using a computer controlled kite as the sail. If you don't believe a shipping company won't cut its fuel bills by using such a system, then such a reaction just might explain why the Germans do so well selling real things in the world market.

Since you seem pretty main stream, here is a mainstream link -
http://www.msnbc.msn.com/id/13325827/site/newsweek/

You just may want to read their English information at http://www.skysails.info/index.php?L=1

Take particular note of their first paragraph -
'A simple fact: wind is cheaper than oil and the most cost-effective offshore energy source. Yet, despite its attractive saving potential, it is not presently being used by cargo ships - for a simple reason: so far no sailing system has met the requirements of commercial shipping.'

Of course, do notice some of the key features - computer controlled, navigation optimization, high technology fabrics, essentially bolt on to existing ships, basically no extra crew requirements, fairly low cost, with fuel savings estimated to be up to 33%.

I seem to remember reading about this a couple of years ago (in German), back when it is was more a concrete concept than a product. Just another German trait - good ideas are merely the start of the process of making money, not the end of it. As you can maybe guess, there is a real lack of German financial engineers doing world class financial engineering. In that, the U.S. is vastly ahead.

Considering the U.S. doesn't have much of a merchant fleet anymore anyways, your scorn is perhaps forgiveable as ignorance. As you can see from the links, the tanker won't cruise into port under 'sail' - it will just use the 'sail' for most of its journey - which can be even faster than if it simply used its engines. German engineering tends to be like that - increasing efficiency means that you have your choice of sober cost savings or more excitement - or a mixture of those two extremes. In this case, I am pretty sure that the shipowners will make the decision they find most profitable between fuel cost/turnaround time.

You know, checking out what other economies/societies are doing as they face a future of more expensive energy might give a broader view of the fact that technology is not an either/or tool. Ignorance is not a very profitable way of looking at things, if money is your interest. Money is certainly a German one.  

You misunderstood :P

Thats so cool btw :P

This is even cooler!!
Another innovated idea: the all electric bus!!