Asus have tried something innovative by unveiling the Asus Padfone. It sounds awful but it's basically a smartphone that can slot into a tablet to power it.
This another Android 4.0 Ice Cream Sandwich device with a 4.3in Super AMOLED qHD screen powered by a Qualcomm 1.5GHz dual-core processor and has 1GB of RAM. The tablet has a 10.1 inch screen and it's own battery. You can also get another keyboard accessory making it an Android laptop.