Why is Lucid stock surging?

Group 1 - Lucid's stock increased by 46.72% in premarket trading following Uber's announcement of a $300 million investment in the electric vehicle maker as part of a six-year robotaxi partnership [1][4] - Under the agreement, Uber will deploy at least 20,000 Lucid vehicles equipped with Nuro's self-driving technology over a six-year period, with the first robotaxis expected to launch in a major U.S. city next year [3][4] - The partnership marks a significant shift for Lucid from focusing on luxury consumer vehicles to entering the commercial robotaxi market [5] Group 2 - Lucid's first robotaxi prototype is currently being tested at Nuro's Las Vegas proving grounds, with the vehicles set to be owned and operated by Uber or its fleet partners [6] - Lucid filed a preliminary proxy statement with the SEC regarding a special stockholders' meeting to authorize a 1-for-10 reverse stock split, which the company believes will make its common stock more attractive to investors [7] - The reverse stock split will not affect stockholders' ownership interests or voting power, except for potential cash payments for fractional shares, and requires majority approval from votes cast at the special stockholders' meeting [8]