Chanos got China right. Now he's betting against Elon Musk - Oct. 8, 2015
While he called Musk's Tesla (TSLA) cars a "great product," Chanos worries the electric car maker will always be a boutique car maker and won't be able to transform into a mass market one.
"To sell millions of cars -- which is where the stock is valued -- they've got a long way to go," Chanos said.
He also knocked SolarCity (SCTY), the renewable energy company Musk co-founded.
"It's really nothing more than a consumer finance company -- and it's not a particularly good one," Chanos said.