As someone who commutes [usually] on 280S from Mountain View to San Jose -- adding about 5 miles to my optimal commute -- because 101S-->87S is even worse, I'm dreading the opening of the new Apple campus.
Note though that most of the new Apple Campus was the rather large HP Wolfe Road campus. I don't know how the population of the campus changes between the two companies (and it's obviously near zero at the moment) but it's not like there was nothing there before.
