Hello Stefano,
It sounds as though you’re wanting to add shortcuts to CarPlay in your vehicle. Apple Support Communities is a great place for help! With CarPlay you are able to manage your applications that appear on the display of your infotainment system. This can be found in the section titled Arrange your CarPlay apps of the following article.
Use CarPlay with your iPhone
When it comes to using shortcuts you’ve created via the Shortcuts application, you would have to use Siri to run those, as the shortcut itself can't be added directly to the display like applications can. More information about using Siri to run a shortcut can be found in the article below.
Run shortcuts with Siri, the Shortcuts app, or Siri Suggestions
You can also find information about using Siri to control CarPlay in the Use CarPlay with your iPhone article.
As adding shortcuts directly to CarPlay isn’t supported you can provide feedback to Apple. They do appreciate all feedback regarding their products, services and features. The following link can be used to provide feedback to Apple.
Product Feedback - Apple
Take care!