Never underestimate Craig McCaw...
Clearwire is using a variant of WiMax, which some call Wi-Fi on steroids.
Today, it is largely unproved under market conditions but has started to receive more attention in the past year, as major corporations have made commitments to it. Wireless giant Sprint Nextel has pledged to build WiMax systems in some areas next year.
With their experience, McCaw and his team have grabbed a lot of attention and money, raising nearly $2 billion in capital from Motorola, Intel and others to finance the venture.
Currently, the network Clearwire is building is based on fixed services, meaning a user needs to sit in one location to receive a steady connection. The next evolution will be mobile and allow people to maintain a connection while in a moving car.