Tesla (TSLA) continues to struggle in Europe, where sales slid 28% in May and fell 41% year-over-year. Sam Vadas takes a closer look at the sales plunge, which she says comes in part from consumers seeking cheaper competitors, especially from China. As for its robotaxi, Sam notes the "tug of war" it will face between drivers and regulators. Prosper Trading Academy's Scott Bauer believes volatility levels are currently low for the stock and offers an example options trade for Tesla.