On Tuesday, electric vehicle stocks showed mixed performances. NIO (NIO) fell more than 7%, Xpeng (XPEV) dropped over 9%, and Li Auto (LI) declined nearly 10%. In contrast, Tesla (TSLA, Financial) rose by more than 1%, and Rivian (RIVN) edged up by 0.7%.In related news, Tesla plans to host a "Robotaxi Day" event at Warner Bros. Studios in Los Angeles on October 10. During this event, Tesla is expected to reveal advancements in its autonomous driving and robotics technology. ...