Shortcut to flows from Android Auto?

[Flemming Almhøj]

As subject says

I have a sound book app which doesn't have android auto integration - is there a way to make a flow shortcut in android auto.

I have tried Google assistant, and it works somehow (hi Google, start flow in automate) - but it only works with English and then speak to text replay on sms is not in my first language, but in English (but not always) :(