Minecarts do not go through chunks

Hello, I play survival quite a lot and have seen so many complain about this so i decided to raise this as an issue. Minecarts are so expensive to build. I want to transport lots of blocks using a chest minecart over long distances (industrial to main base) yet the minecart does not continue on the rail due to chunk loading. I feel that this means that minecarts especially chest minecarts are pointless as they do not go on their own through chunks and there's no way to transport them with yourself on the cart. I think either the chunk loading issues should be fixed for minecarts or, bring out a new item that can link several chest minecarts to a normal cart. This way the user can chain several chest carts to a normal cart (like a train) and transport these through the chunks. If nothing gets done with this chest minecarts are pointless. Please can you give ma an answer on whether this is ever going to be patched?

Please fix this so that minecarts can travel the world on their own no matter the distance as long as the track is powered etc.