I have something called a MiFi it is a pocketable WiFi router connecting over 3G and 4G networks. My ASUS transformer doesn't take a SIM card so I can't connect with it if I don't have WiFi access. To be specific it is a Huawei E586 and it has 3GB (strange number, but I assume 1GB is taken up by operating instructions) of storage and a MicroSD slot, hence I can expand storage if need be. It is still a tad bulky, think cell phones by Siemens in the '90s, but I can see them getting smaller and perhaps expanding the number of slots. That way you can, in the future, have both cellular access and storage with some of these Cloud devices.
You gotta love technology. Whenever I run into geeks I make sure to take good care of them.