Sprint has begun marketing Sierra Wireless’ “Overdrive” 3G/4G Mobile Hotspot that lets up to 5 Wi-Fi enabled devices to share one 3G/4G connection. 
Overdrive 3G/4G Mobile Hotspot also includes built-in GPS capability (on 3G), MicroSD slot for up to 16 GB memory cards creating shared storage with up to five connected devices, and an extended Wi-Fi range of up to 150 feet.
The device will go on sale on January 10 for $99.99 (excluding taxes) after a $50 mail-in-rebate with a two-year service agreement.
The silicon inside is the Beceem 250 (WiMax) & MC5728 (CDMA module with QSC6085).
http://www.sprint.com/4Ghttp://