I have heard that Tesla is a self fullfiling prophecy. Elon Musk has an infinite amount of crazy ideas that he is willing to try out. The fact that TSLA is going up allows him to dabble with all of them. Most of them don't pan out. However, there is a decent chance that at least one of his ideas works out and actually ends up justifying the value of the stock.
Yeah it’s almost a VC firm at this point. You’re not investing in the discounted future cash flows of Tesla absent influx of capital, rather you’re investing in the ROI you think Tesla can generate using money from equity raises.