Tesla in June achieved its highest monthly sales of China-made vehicles since opening its Shanghai plant in 2019, data showed on Friday, as the U.S. carmaker ramped up output which had been hit by the city's Covid-19 lockdown. Tesla sold 78,906 China-made vehicles in June, including 968 for export, the China Passenger Car Association said. In May it sold 32,165 vehicles and exported 22,340. Tesla also achieved the highest monthly output at its Shanghai plant in June, added CPCA's secretary general Cui Dongshu, without giving a specific number. Covid restrictions in Shanghai in the April–June quarter had hobbled Tesla's output…