It's 154 if their earnings stay constant for the next 3 quarters. If price stays constant and analysts are accurate, P/E will drop under 100 next year. The P/E was 3000 at the beginning of the year.

Tesla's price isn't reasonable yet, but it's getting there fairly quickly.

Yep, and in just one quarter that'll be a PE of ~300. PE ratios change really fast when growth is fast.