This could be used to charge up an electric car using solar power.
http://news.bbc.co.uk/2/hi/technology/7501476.stm
and this can store power for use at night or be used as a fuel for cars. You just stop at a garage, empty the old vanadium liquid for recharging by the fuel station, and refill with already charged vanadium liquid.
http://www.treehugger.com/files/2005...anadium_ba.php
and this can be used to produce biodiesel from algae and store CO2 and make fodder.
http://www.greencarcongress.com/2008...land-gove.html