Chinese auto giant BYD, one of Tesla's biggest rivals, reported a doubling of its net profits in the first quarter compared to the previous year.BYD's net profit increased to 9.15 billion yuan ($1.3 billion), surpassing Tesla's net income of $409 million for the same period.Operating revenues for BYD also rose 37% to 170.4 billion yuan ($23.3 billion) in the first quarter, with earnings per share up 99%.BYD continues to surpass Tesla in key financial metrics, with its aggressive expansion strategies and growing sales.