Veteran fund manager George Noble says Tesla is the 'biggest stock market bubble of all time'

Tesla's self-driving Cybercab is expected to roll out of factories in April. It comes without a steering wheel or any brake pedals.

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• Veteran fund manager George Noble is sounding the alarm on Tesla stock.
• He thinks that the EV maker is a stock bubble that many investors misunderstand.
• Noble told Business Insider that he doesn't think Tesla's AI or robotaxi ambitions will help it.

Tesla stock is in for a rocky ride if veteran investor George Noble's outlook is correct.