Asus has shied away from launching its PadFone devices in the US, but that may change soon. In an interview with Engadget, Asus CEO Jerry Shen reveals the company is planning a set of high-end PadFones for Europe and the US, alongside a "mainstream" series for Asia. Asus has typically launched its PadFone variants in Taiwan, using the country as a testbed for any further expansions. Asus’ latest PadFone Infinity smartphone launched in Taiwan in May complete with the option to dock it into a large display to become a tablet, and Shen claims it has sold over 10,000 units between April and August. That’s not a huge number by itself, but selling over 200 units per day in Taiwan has widened the company’s ambitions for the device.