Portable Wi-Fi Hotspot
The pack taps into cellular services' ultrafast EVDO broadband access. Parts for the project will set you back about $1065, minus the backpack itself.
Perhaps the most intriguing use for a mobile hotspot would be for a highly mobile team such as a group of emergency relief personnel, working in an area where EVDO is available but Wi-Fi is not. Mobile hotspots could also be built onto vehicles and other large pieces of equipment.
Sources: Wi-Fi Toys, Boing Boing