Not sure what you are talking about: Tesla delivered 1.79 mio cars last year, less than the year before and not much more than BYD (source). Just for comparison: Toyota alone sold more than 2.3 million cars in North America in 2024 (source)
The 7 million cars you mention without a source can only refer to all the cars Tesla has ever sold. That would still be fewer than Toyota sells worldwide in one year.
Are you serious?