Autodesk offers 1GB cloud storage for everyone, and 3GB for those who pay an annual subscription fee. It upped to limits to 3GB for anyone, and 25GB for subscribers (thanks to Mark Dooley for the correction).
Vectorworks offers 1GB, but only to those paying the annual sub fee (no outsiders). Until this morning, when the company lifted the limit to 5GB.
Autodesk, now it's your move.