By the way, I wonder why Elon Musk has gotten some much into this presidential election so suddenly and so heavily supporting Trump for his second term.
Quite obvious. If the other side wins, it's going to be a living hell for him and all others who advocate for free speech, among other things. Trump is the better devil who could alsoQuote
Somehow and in some way Elon must be planning to profit off a second term for Trump, which still seems weird to me considering Trump himself has mocked electric vehicles while comparing them with gas vehicles, so this is kind of wacky.
Nothing wierd if you are a businessman. Both are businessmen 
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Do you believe there is a possibility Trump promised some governmental position within his administration in exchange of his big endorsement and the big money campaign he is doing for those who register?
He did promise him a big position, but I doubt if it's in exchange for the current campaign he's running because it's not specifically targeting the trump supporter.