US sales data for electric vehicle manufacturers Rivian and Tesla has been reported, with some outlets noting a decline in sales for Rivian. The sales performance of these companies is being discussed in the context of the overall electric vehicle market, with various outlets weighing in on the best-selling EVs and the reliability of different models. The impact of this sales data on the companies' stock and brand perception is also being considered, with some reports indicating a significant drop in Rivian's stock price.