[spotman]

Most major automotive and ev companies use tools such as environmental chambers to do phases of R&D. (quite possibly all do but obvs can’t confirm, but do have first hand knowledge of several major companies adopting this) Even companies much smaller than Tesla.

Would be shocked if Tesla did not have this capability.

So who knows if this is part of their testing and validation, but it is not true that you can’t test for different environments than where the core design takes place. It is extremely common to do this in rapid fashion without having to transport things to an alternate climate.