Did they actually send a rejection email or just ghost you with no responses?

There's a lot of elements to typically cover in these questions, clarifications, scoping, making sure you're answering the actual question the interviewer is looking for you to answer, etc. Could be worth doing a mock interview with one of the Prepfully Tesla Mechanical Design Engineer experts... they've worked in the role so they clearly know how to get through the interview. prepfully.com/practice-interviews

Tesla company future very bright