Things promised that never happened:
"[Google Glass] will be broadly available. You won’t have to jump through any hoops."
— Sergey Brin, 2013
"Can we build a better phone for prime members? The answer is yes."
— Jeff Bezos, 2014
"A year from now, We’ll have over a million cars with full self-driving."
— Elon Musk, 2019