1. You haven't presented compelling evidence that Musk 'lies a lot'.
He claims to be a founder of Tesla
He lied about the release date of the Model 3 and its price
He lies about FSD on a regular basis
He lied about when SpaceX was going to Mars
He lied about Hyperloop
He lied when he said he had the finance to take Tesla private
He lied about the release date, price and specs of Cybertruck
He lied about the release date of the new Roadster - probably it will never appear but he has taken deposits
He lied about the release date and specs of the semi.
He lied about the Tesla robot - well, he was complicit in the presentation of fake videos
He lied about Solar City's roof tile solar panels
Pretty much every time he comes up with a number or a date for a future product, it will be a lie. If he told us the model 2 was going to have four wheels, I'd want to count them before I believe him.
2. Even if he did, each case should be taken on its own merits, not summarily dismissed because you say he 'has a history of lying'.
There is a pattern to his lying. He always overstates his case to get people on board and the truth doesn't come out until after they are committed. For example, the fraudulent Solar City presentation came just before he asked Tesla shareholders to
bale out buy Solar City from him and his cronies. The fact that the tiles didn't really exist only became evident after the deal was done.