Better integration of transportation into economy

Hello, I think it would be a good idea to have transportation more integrated into the economy. For example, the way it is now for the army it should also be for coprorations, everyone needs to tranport products after all. So trucks should be used to transport the products for corporations too. Also there should be arports and harbours for civilians as well as for the army. Less roads should lead to lower production by corporations.
Greetings, Anouk,

There are airports for civilian if you build an air trasportation corporation.

Hello, Thank you, i did not know that, what will such a corporation do? Increase immigration?
thanks again,
Greetings, Anouk,

Nothing much. well, it's just like another corp - provides air transportation, but, beyond that, it also builds a civilian airport in your country, increasing your ability to help/assist countries in need.
Thing is, only corps that use air transportation can buy the product, it's not required by all. Although i do like the idea about integrated transportation, you must understand the scope of what you're suggesting. Unless you use it as a resource - like oil/paper/etc - the additional time used in processing the "transportation" of goods to and fro, will take up too much cpu time.
As well, where do you stop? how about train transports, they're cheaper for bulk stuffs; by default, if you use them, you need to stock them with gas, and since troops require gasoline and military supplies, I guess those "civi-supply units" would require plain supplies, and gasoline. See where I'm going with this?