Let it be said on the record that I don't like oil dependence and I am also a card carrying member of The Mars Society (where Zubrin is currently president), I am not below scrutinizing it for vested interest.
I haven't finished watching the video yet, but around 40 minutes he starts talking about methanol fueled engines for cars. GREAT! Right? I think so...whether or not it is however is beyond the scope of this blog. What is within the scope of this blog is whether or not it is a vested interest of his.
In his book, "The Case for Mars..." he describes the fuel needed as a methane oxygen fuel for the ship they could generate with his - albeit previously available before him - technology on Mars. I'm no chemist so I could be wrong about this, but is it possible that here a doubly vested interest is getting America non-oil dependent and also having technological research improved in the use of methane/methanol in combustion engines? Which, might I add is his solution to roving on Mars as well...

image courtesy of Marshome.org

