The electric vehicle market appears to be gaining momentum. Outside of the leader in the market, Tesla NASDAQ: TSLA, EV firms are posting new records in sales. Six Chinese EV makers fall into this category. This includes the country's leaders in the space, like BYD OTCMKTS: BYDDY and several smaller Chinese players. Even U.S. automakers like Ford Motor NYSE: F saw its electric vehicle sales hit all-time highs recently. Still, investment in this space warrants caution. In the United States, the recent rise i ...