SUVs are probably the safest option. You get your nice isolation and you also get a nice crash cage! I wonder why it's so hard to prove to motorcyclists that this is the most efficient option!?

...Because they don't care about that crap. They are way ahead of your efficiency, often even ahead of the efficiency of a bus. A bike can get 70mpg without very much trouble and some more than 100mpg, and they don't cause traffic congestion in the first place because they occupy little additional space beyond the rider.

Gee, Maybe they're on to something, eh?