And before anyone cries 'Sony invented ultra thin laptops, so really they're all copying Sony, even Apple, where were all these Ultrabooks prior to the Air?
There were only a handful "thin" laptops prior to the Air.
The term "Ultrabook" is simply a renaming of the Ultra Portable class of laptops.
The original thin laptops were simply too expensive to build to catch on.
Even the original Air was expensive when you consider what you were actually getting.
Third rate CPU, crappy graphics, minimal storage and soldered on memory (you can't replace/upgrade it).
IBM's X series were around long before the Air or the Vaio series from Sony. It too was a wedge design, but was limited by the fact it had to use a traditional 2.5" HD. (1.8" drives didn't exist back then.)
The X40 weighed approx 2 lbs (almost a pound lighter than the Air) and was only 1" thick closed. Not bad for a product released in 2004. But it cost over $2k.
I believe Sharp had one around 2003. Can't recall the name.
The original Air was slow and had crap for SSD storage (64GB).
Even the available traditional HD was only 80GB and slower than HD's found in other laptops.
Other than its exterior design, it was a piece of crap internally and still expensive considering what you got.