No smoke without fire? The growth in tobacco-free, battery-powered products is making even Big Tobacco sit up and take notice. The electronic-cigarette industry is moving quickly. Sales were $400 million to $500 million in 2012 and will "at least" double this year, Wells Fargo's Bonnie Herzog told CNBC.
"We're actually predicting that consumption of e-cigs could surpass consumption of traditional cigarettes in the next decade," she said.