Doesn't surprise me -- a couple of times my new 3 has had nothing on the display but it's still happy to let me put it in gear and drive away, and the display pops up within a second or two.

To be sure, it's a bit unsettling, and I wouldn't be thrilled about it deciding to not work for a day or two, but, in a way, it makes me MORE comfortable that the vehicle control systems function as expected.