On Sunday afternoon, Elon Musk congratulated employees at Tesla (NASDAQ: TSLA) for reaching a big milestone: producing more than 5,000 Model 3 sedans in a week. He also stated that Tesla is on track to produce 6,000 Model 3s per week by the end of August.Tesla's vehicle production has ramped up dramatically over the past few quarters -- albeit not as quickly as originally planned -- leading Musk to comment that Tesla had become "a real car company".