A legendary auto exec says Tesla is doomed — and he could be right (TSLA)

Former GM exec Bob Lutz has been skeptical about Tesla's future for years.
He had a front-row seat for GM's 2009 bankruptcy.
Tesla's cash position means that it could struggle to stay afloat amid a US sales downturn.
 
Former GM executive Bob Lutz returned to Tesla-skeptic mode last week and said that the company is doomed. 
This isn't the first time Lutz — who retired from General Motors after also working for Ford, Chrysler, and BMW — has foretold Tesla's demise.
For the