Adding containers from other mods in a minecart form.  Why should we not have all the Iron Chest in carts.  Maybe some barrels in carts or even a DSU??

 

FTB Forum Post:

http://forum.feed-the-beast.com/threads/1-6-4-b0-5-1-1-7-10-b0-5-2-extra-carts.47925/