[Request] Make turning train cars and car into storage

[andre2]

Hi,
im in the countryside with the car or the building train. Or I´m just close to my one track double head tram train with 2 cargo cars attached.
And I want to build some stuff. I know exactly that the needed building is in the car, building train, tram train.
If I request it by bots, it will taken from a storage chest which is annoying for two reasons.
1. Because the content of the car or building train becomes now surplus material.
2. The arrival time from general storage is longer than taking it from the building train / trunk, which is close by. The mall sometimes is far away while you and your building train/ car is in perfect roboport coverage.

A mod which makes cargo cars or the car trunk as a storage chest, which can get configured by a cargo wagon interface would be great.

Configuration options:
-storage on/off with radio button,
-priorization: higher than anything else, as high as storage chests, lower than ....(i´m fairly new to the game, I dont know all different levels of chests yet and their priotizations.)
-Take only from building train / trunk if closer than other storage - on/off radio button - You maybe want to shorten waiting time for the requested stuff.

I play PY mod and my OCD gets triggered if so much suplus buildings are around. Considering the ammount of different buildings in the mod, this adds up fast.

I hope a modder likes this idea. =)