The Terra HD is a thin and lightweight 11.6-inch netbook/subnotebook by Linux hardware builder ZaReason. It is powered by a 1.66 GHz Intel Atom N450 CPU.
The ZaReason Teo, that I just discovered, looks like the successor of the Terra A20, which was the first netbook by ZaReason.
The Terra A20 is the first netbook by ZaReason, a Linux hardware builder based in Berkeley, California. The Terra A20 has a 10 inch matte LCD screen.