Elon Musk provided a robotaxi update over the weekend.Shares of Tesla (TSLA 4.13%) traded nearly 4% higher as of 2 p.m. ET today. CEO Elon Musk provided an update on the company's robotaxi fleet on Sunday, and new data could suggest that its electric vehicle (EV) sales trends are improving.A wider robotaxi releaseAccording to Barrons, Tesla recently reported longer wait times for its Model Y, rising from one to three weeks to a range of four to six weeks. It could signal that orders are picking up. The firs ...