You can jump over to the digital Delivery forum where we kick around these kinds of topics.
40 gigs is pretty big....depends on your upload speed and the client's download speed. It's gonna take hours. Honestly a $15 FedEx standard overnight is probably your best bet...Dual layer Bluray disc?
Tilt Media Inc.
Video Production and Post
And of course that's exactly what we did. I keep getting missives from Cloud companies and such about what they can do for my company as it relates to storage and archiving, uploading and such. As yet, we're so far from the holy Grail.