1TB SD card puts one sixth of Wikipedia in your camera
The first terabyte SD card will soon be sold by Sandisk. They were apparently first to 512GB too (don't, PNY's is cheaper), but no-one cared because that's not as arbitrarily interesting a number. No release date, no price. It'll be about $700.
Hitachi sold the world's first one terabyte hard disk drive in 2007, according to Wikipedia, one sixth of which would fit in a terabyte, assuming you're just counting the plain text of articles.
I wish there was an SD card format in the exact shape of tiny 3&half-inch floppy disks, complete with a sliding metal hatch over the connectors and a free bootsector virus