** Shares of Tesla down 5.4% at $225.85, premarket
** CEO Elon Musk showcased on Thursday a long-awaited robotaxi with two gull-wing doors and no steering wheel or pedals
** Musk says the co will start building the fully autonomous Cybercab by 2026 at a price of less than $30,000, but did not specify how quickly Tesla could ramp up the production of robotaxi
** Musk also showcased robovan, Optimus humanoid robot
** However, some Tesla investors and experts say they were hoping for more concrete details
** Twenty-two of 54 brokerages rate TSLA "buy" or higher, 19 "hold', 13 "sell" or lower; their median PT is $221
** As of last close, stock down about 4% YTD
(Reporting by Sukriti Gupta)
((Sukriti.Gupta@thomsonreuters.com;))