Were most Tesla engineers who designed this H1Bs, or were they smart westerners?
I deal with programmers and "data scientists" who violate standards that were figured out 20+ years ago because they're from non-Western countries and have no understanding of what preceded them at all. None. It's disturbing to witness it. It's not getting any better either.
Even the team at Microsoft itself that built the Surface laptops failed miserably at a few things. One of the glaringly obvious ones was that they used serial numbers that contained leading zeros and numeric characters instead of alphanumeric characters (even laser etching them into the cases). It was a sophomoric mistake and no one caught it before launching them. What a way to scream to the world that you don't know what you're doing.
You may be aware of the problems with leading zeros but others on the thread may not be. Basically, a serial number might be
000123456789
but computer programs trim the leading zeros off and change the serial number to
123456789
Computer programs do not recognize both of those as the same device and that causes problems when writing code to push out updates to devices on the network (among a whole slew of other problems).
Not using alphanumeric characters means that programs treat either as a number. Years ago, even the rookies understood that you want the serial number to start with a letter, such as:
MS0123456789
which makes programs treat it as text, not a number, saving networking and programming teams all kinds of aggravation.