30 mile WiMax

Wi-SKY Networks and Proxim Wireless Achieve WiMAX Connections With Vessels at Sea and in Air (http://www.bbwexchange.com/publications/page1423-154340.asp)

According to this article, they've been able to achieve continuous operation over distances up to 30 miles and altitudes up to 10,000 feet and speeds up to 145 MPH. Pretty darn impressive...