While disappointing, it is also understandable. Earnings calls are usually about items concerning profitability of the company.
Also little time spent on original roadster.
What was amazing to me is that Tesla has new (and better) EPA range ratings, but they have not gotten around to posting them. Due to hard work by Tesla, our cars are getting even more long legged. Mentioned almost 400 miles for Model S and Model X getting better as well.
Plaid is coming EOY and should blow peoples mind with what it can do. FSD is advancing behind the scenes.
Semi is being held back, because there is so much demand for cars, and the trucks take so many batteries they get pushed back.
Next big deal will be their Battery Day reveal in April. Even Elon seemed blown away at some of the things they have achieved.
Some of the questions were inane and poorly thought out. Took away some of the available time for more valuable questions (like yours).
Elon mentioned that they missed a demonstration of recent FSD capabilities they wanted to reveal before EOY...but not by much. Expect more details....soon.
Loved to see the aftermarket stock bug in the corner, hovering around $650/share.
Not sure they are putting as much resources into bringing legacy cars forward as they are in making the latest offering even better.
Saw a video on Gruber Motors doing lots of legacy work on older Model S and Roadsters. They might be someone to contact about doing what you want. Find them on utube. Working on refurbishing older batteries, electronics, door handles, motors, fans etc. They specialize in bringing bricked Tesla back to life. They rework old computers, displays, invertors etc.