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What is wrong is that SUVs (and similarly destructive large pickup trucks and vans) are a classic case of "privatize the benefits, socialize the costs"
--Given that oil/gasoline prices are massively subsidized, the more fuel a vehicle uses, the more it takes advantage of that subsidy.
http://www.icta.org/doc/Real%20Price%20of%20Gasoline.pdf
--The relaxed emissions and safety standards for SUVs are borne by society in higher medical care costs and higher insurance premiums
--The much-desired higher seating position of SUVs comes at the expense of the view for other drivers.
--Etc., etc., etc.
It's not the SUVs that are the problem, it is our society's inability to rationally price energy and transportation costs.
http://www.sierraclub.org/sprawl/articles/subsidies.asp