Logitech SmartCar Dash Mount
Another item we wouldn't say is official because Google didn't make it, but being sold directly on their storefront is this Logitech Car Mount. There is an option for the dash or a cheaper alternative that attaches to air vents.
With the addition of Android Auto now working with a phone instead of only car infotainment systems or Pioneer receivers, many will want to turn their Pixel into a driving companion.
Mount this to your dash and magnets securely hold the Pixel in place. Perfect for controlling it while driving, getting directions, listening to music and more with ease. It works over Bluetooth, and instantly launches the app when the phone is attached. It's a little expensive but a well-made accessory for those that want one.