Replying to messages in Android Auto is broken if Hangouts isn`t installed, Google is on the case
(Android Police)

According to several frustrated posters on Google`s product forums, the hands-free reply function built into Android Auto is broken. The feature enables users of various different messaging apps to reply to incoming messages while keeping their hands on the wheel. There is a bizarre workaround, though — make sure you have Hangouts enabled and up-to-date. The original poster writes specifically about not being able to reply to WhatsApp and Telegram messages on his Google Pixel using the voice commands. Read MoreReplying to messages in Android Auto is broken if Hangouts isn`t installed, Google is on the case was written by the awesome team at Android Police.