It has gone through the same hail, fire and wind testing that normal roofs endure. (courant.com)
Musk said it's looking «quite promising» that the solar roof could be cheaper than a normal roof after the shareholder vote on Thursday. (businessinsider.com)
While Musk was teasing a solar roof that looked better and lasted longer than a normal roof, employees were scrambling to develop a prototype that matched that vision. (businessinsider.com)