Does anyone here know what the differences are between an early 2021 (say Jan-Feb) made Model Y and a late 2021 (June-December) are, if any? Looking to purchase a used one and want to make sure I won't miss out on anything major if I find an early 2021 car. The only thing so far I found as a potential difference is the double-pane glass...but that's easy to confirm. Anything else?