But he's doing it from the car and stuff too... Must be a 3G network feed from a laptop or something.
A wireless card from one of the major cell phone carriers should provide enough bandwidth for him to send the feed to a server/website. The people viewing the site wouldn't be using the bandwidth from the wireless card. They'd be using the bandwidth of the website.
Again, this is all speculation on my part. When I first clicked on the link I thought the same thing you did, "how's he sending the video".