Sometimes I make a point using logical arguements backed up by credible proof. And sometimes I just like to bull****. I try to make it obvious which is which, though perhaps I ought to try a bit harder? Eh, see. Thats me ranting and/or being sarcastic and/or making broad generalizations to illustrate a point. Collecticely known as bull****ting.
As for the number of SUVs and Minivans on the road, I would guess that where I live, around 50% of vehicles are either SUVs, Minivans or pick-up trucks. I could reasonably see that number jumping to maybe 70% in 6-8 years. And with both the Clinton and Bush administrations failing to impose more efficient fuel economy regulations on the auto industry, I don't see the amount of gas used by these types of vehicles miraculously dropping overnight.
As for hybrids, it is more than likely that their technological progress and acceptance into society is intentionally being thwarted by parties with a vested interest in maintaining oil as the car fuel of choice. With oil being the single biggest industry in the world (as I recall), it would take a real push by someone, to counter the combined influecne of the US government, the oil industry, the auto industry and the governments (and lobby groups) of various oil-rich countries.