英語版WiKiではAAが車速やコンパスにアクセスできるとあるな
An Android Auto SDK has been released, allowing third parties to modify their apps to work with Android Auto;[2] initially, only APIs for music and messaging apps would be available,[10][11] but it is expected that through Android Auto, the mobile device will have access to several of the automobile's sensors and inputs, such as GPS and high-quality GPS antennae, steering-wheel mounted buttons, the sound system, directional speakers, directional microphones, wheel speed, compass, mobile antennas, etc. Also, there is partial access to car data, a feature still under development.[12]

一方、日本語版WiKiでそれが否定されてる根拠は不明だ