The head of Tesla Motors is. From the WSJ’s Environmental Capital blog:

Elon Musk, the founder of PayPal and now the head of electric-car maker Tesla, made a splash yesterday when he called for $10 gasoline to fully account for all the environmental harm associated with fossil fuels.
It was self-serving, of course: Tesla makes expensive electric cars which could only get more attractive if gas prices soar. Though it’s worth noting that Mr. Musk’s sugarplum vision of high gas prices isn’t that much different than the one initially floated — and later retracted — by Energy Secretary Steven Chu.

The good news is that $10 a gallon gas will certainly halt carbon emissions. Of course, the side effect with be a global depression, but that’s the price you pay to cool the planet a half a degree or so over the next century.