A patient in Houston can be whisked to a Level 1 trauma center inside 15 minutes; in Southwest Texas's Webb County, the trip might take two hours. This so frustrated Texas trauma surgeon James H. â€Redâ€ Duke that he developed a digital ambulance that lets doctors orchestrate treatment from the hospital. The Disaster Relief and Emergency Medical Services Interact ambulance transmits and receives vitals and video by switching among cellular, satellite and 802.11 networks. Vibrations, corners and overpasses cause most antennas to drop their connection, but this one keeps a tight lock even on twisty roads. Should a connection failure occur, error-correcting software in a pair of $73,000 modems reconstructs the missing bits. The system transmits patient information to the hospital, where ER docs see and hear everything through videoconferencing equipment and issue instructions to en route EMTs.