Redirect to different web api based on url path

I have two APIs, UserStore and some resource API lets say cars that belongs to that users.

UserStore API: http://ift.tt/2gRcGdq Cars API: http://ift.tt/2gExjGU

How to consolidate this two APIs? I mean that client could access user store resources and cars resources using the above URLs that located at different WEB APIs.

If there is a solution I prefer it using Microsoft technologies (.net core, azure api management and etc...).

Thanks