Bitcoin surged when Tesla founder Elon Musk announced in February the electric carmaker would accept the cryptocurrency as payment. But just as quickly he changed tack and announced Wednesday that paying in bitcoin is off the table now that he learned crypto mining has a negative impact on the environment. "It's a head-scratcher," Dan Ives, Wedbush managing director of equity research, told Cheddar, pointing out the climate change concerns are nothing new. Still, he's bullish on Tesla and "the green tidal wave."