The electric vehicle bubble popped around a year ago. Tesla (TSLA) is the only stock whose valuation defies the overall headwinds. While the robotaxi announcement this week should prop TSLA stock at current levels, the rest of the industry is in trouble.Last week, the European Union imposed large tariffs on China-made EVs. Germany, Europe’s largest economy, opposed the tariff. The country does not want a trade war with Beijing, but doing so would hurt its economy since it raises costs for suppliers. Consumers would end up paying for the tariff.The tariffs will add up to 45% in costs for…