Maybe in a year or so from now once they have enough usage telemetry and have cleaned up some of the errors, they'll be willing to release an Ultimate Edition on a terabyte SSD that includes the sim and the scenery that is most commonly used. That would make a nicer "out of the box" experience and would make things better for those with limited bandwidth or data caps.
That's not a 1TB USB drive, it's a tapestry. Then they took the listing for that and changed it to a USB drive so they could harvest the 5 star reviews.
They are actually selling a USB drive through this listing now, though. From a review:
"Attractive case, but the guts are actually just a 16 GB drive with the memory addresses looped around to try and hide the fact that it's a low-mid capacity drive. It'll make folder structures just fine, but as soon as you hit 16 GB, BAM! It starts overwriting from the lowest address. Made for a nasty, nasty surprise when I was collecting data only to check it later and find nothing there but empty folders."