This response re the self driving car was particularly interesting-
"While the technology has progressed a lot, it still can't handle all situations we want it to handle. But on the positive end, I have taken the car a number of times to Lake Tahoe (highway only), and every time it drove flawlessly."
It struck me how the overwhelmingly positive response to his online Stanford class took him by surprise and really spurred him to want to open up education. I guess even the most accomplished among us can become inspired.
In my experience the most genuinely accomplished people are always getting enthusiastic and inspired about one new thing or another. I think their capacity to be inspired is one of the main reasons they became accomplished in the first place.
You can join via webchat if you don't have an IRC client yet: http://webchat.freenode.net/?channels=udacity
Just started the Crypto course and it's paced really well, I like it.