Google faces many interesting challenges with Android Auto. It seems like a simple task to build an interface that is less messy and more enjoyable than existing in-car systems. Given the low bar set by most existing platforms, this doesn't sound very difficult. However, Google is taking advantage of more advanced technology and clever design so Auto isn't just another small iterative step forward. A teardown of the latest update shows some interesting progress on new input methods that don't require as much attention and a parking assistant feature that remembers where you left your vehicle.