Note that we have a separate SCTY thread:
http://www.teslamotorsclub.com/showthread.php/16377-Solar-City-Investor-Discussions
As for TSLA, it might be worth discussing not what the top will actually be, but what the volume, volatility, and rate of descent might be. For instance, I think there are people kicking themselves for not getting in at $68. Maybe even some at $75. Certainly people at $60. Does a 10% drop in TSLA kick off a new spurt of buyers, or does it lead to a "get out while the gettings good?" Or, both - in which case the price could whip-saw like crazy.
There's been enough stock holders taking profits to stop TSLA from really shooting the moon all at once. But, 3 days at more than 10% per day is an extraordinary run, and each day's rise leads to new margin calls, as well as new shorters getting in.