Share custom post to other sites in a network

I have a Multisite installation for a car business that has custom posts set up in there (pictures, name of cars, petrol and stuff) with categories and tags.

I would like to add one time the specs of a car in this custom post and then automatically post this also to the other sites in the Multisite installation (for other languages).

Do you know a plugin, or a way to make this happen?