Tesla has relied on selling emissions credits to boost its revenue, and Fiat Chrysler Automobiles (FCA) has been one of its biggest clients. But now that FCA has merged with the PSA Group to form Stellantis, it won't need Tesla emissions credits anymore, the Financial Times (subscription required) reported this week, based on executive comments.Automakers are allowed to purchase credits to make up for not meeting emissions targets. Because it sells only electric cars, Tesla has always had plenty of credits to sell, creating a major revenue stream for the automaker. Stellantis' decision to stop buying emissions credits from Tesla...