The brand new feature which should help you with gathering and dealing with the Hyperloop materials is called the Hyperloop Refit
Please note that his feature will not be available in the Flash version of the game. You are able to utilize it in your Trainstation app and WebGL PC verison of the Trainstation game. In case you purchase this item in your game, and switch back to Flash version, you will not be able to see or use this feature in your game. Your Gem count will display the correct amount as this feature is purchased and usable in your WebGL or App version of the game.
It was not possible for us to crunch in another Hyperloop Rail, at the same time the demand of another Hyperloop rail was great. You can now swap up to 4 rails and convert them to Hyperloop rails.
This feature is available in your Shop in case you own 2 Hyperloop rails, 5 standard rails and you have at least 2 Standard rails left.
This is how it works:
Purchasing this extension will swap one of your Standard rails for a Hyperloop rail.
You can find this option in your Shop > Extensions tab right here:

Maglev rails cannot be Refit into Hyperloop rails.
You can refit up to 5 Standard rails (for Steam, Diesel and Electric trains) to Hyperloop rails leaving you with:
6 Hyperloop Rails
3 Maglev Rails
1 Standard rail.
The first rail can always be converted to a Hyperloop rail using your materials. However, every additional rail refit will have a Gem price. Converting the rails back to standard will cost you some materials.

When refitting your Hyperloop rails back to Standard rails, following pop-up window will be displayed reminding you that in case you change your mind in the future again and you would like to Refit your rail to Hyperloop rail, you will have to pay the full price, again:

IMPORTANT: There always be an option to convert your Rails back and forth to Hyperloop and Regular rails. Every single use of the Rail Refit will have a price. You will always have to pay either your Gems or Materials when using this feature. The price of the rail refit feature will be displayed in your Shop > Extension tab, where you will be able to locate and purchase the Rail Refit extension.
When converting rails from Hyperloop to Standard rails, you the price will be displayed in materials.
This change affects your station 1 only. It does not affect your friend's, contractor's or your other stations.