I do. If you polled every person in my life, friends, family, co-workers... I'd bet one person out of maybe 150 have even heard of this device.
So why do you think that is? Google makes gazillions of dollars every year which means that they can clearly afford top ranked advertising. The few adverts that they have released were so terrible that you would be hard pressed to even understand what the product was at the end of the commercial.
This reminds me of Apple. They've had great products for a very long time, but you never heard of them or actually saw them anywhere. Once they started getting shelf time in stores they sky rocketed.