Asus made this Tegra2 Powered Laptop and Tablet combo device, where the tablet part can slide out of the bottom keyboard part. This prototype feels heavy though, perhaps it's just because it's a very metallic design.
- ASUS Transformer Android Tablet (android-tablet.org)
- Toshiba Announces Tegra 2-Powered Honeycomb Tablet, Lets Its Name Remain A Mystery (androidpolice.com)
- ASUS Eee Transformer Android Honeycomb tablet with keyboard dock looks impressive (intomobile.com)