Decal Material / Decal Geometry Object

It would be great if we could project a material from one object onto another by being able to define an object as a decal object or by applying a specific decal material to an object.

An example use case:
I have a racetrack model. The racetrack has a tarmac material applied. I want to add rubber tyre marks to the corners but the track isnt unwrapped. I dont want to make a new map with different curvature to fit every corner/track element but i could very easily draw a spline and map a texture along the spline.

If a decal material or a decal object existed, I could just draw a spline, sweep it and apply a rubber tyre material to the object and have it project those textures onto the track below following the curvature of that object.

This is a slightly different feature than my other decal feature of a decal map.
https://chaoscorona.ideas.aha.io/ideas/CMAX-I-154
The decal map is for use within the material editor to allow you to use decals to position masks. For instance in a layered material.