According to Tesla CEO Elon Musk, gas should be $10 per gallon.

As Musk said on stage at the Wired Business Conference on Monday, "I'm anti-tax, but I'm pro-carbon tax.  Gasoline should probably be $10 per gallon.  I'm not paying for the true cost of gasoline at the pump... since nobody's explicitly paying for the CO2 capacity of the oceans and atmospheres, it's getting consumed.  We will pay for it down the road, but we are sort of ignoring it for now."

There's not much you can really say to confirm or deny the comments of Musk.  He is outspoken and his words land him in some tight spots from time to time.  Wired Editor-in-chief Chris Anderson called Musk a true Silicon Valley libertarian.

There are falsities in the claims of Musk, but always a grain of truth to support his words.  Certainly gas at $10 a gallon would further worsen the weakened economy and put many more people on the streets, but it would help sell more Tesla vehicles.  Gas at such a price would probably lead to widespread panic, increased theft of gasoline without paying, and people siphoning gas from other cars over night, but it would help sell more Tesla vehicles.  Should gas be $10 a gallon?