What I'm envisioning is while at...say a triathlon...there is a photographer shooting the swim, one on the bike and one on the run. But meanwhile back at the finish line there sits a nice big screen TV with a slideshow running thru real-time captured photos so everyone can stand around watching for pictures of themselves (and then buy a few. )
One way to do this would be for each photographer to shoot using an Eye-Fi SD card (SD card with built-in WiFi) in their camera, which is connected via WiFi to a wireless mobile hotspot (like the Verizon Mifi), or a phone that can act as a wireless mobile hotspot. The wireless mobile hotpsot would enable the images (most likely low-res jpegs due to speed & monthly data cap limits) to be uploaded to an online server. This has already been done at tech & consumer electronics shows, where the images are uploaded to online news sites in real-time as they are taken, in order to get the 'scoop' on first pics of new devices etc.
Then back at the finish, the big screen TV could be used to display the images uploaded to the server by being connected to a computer (a simple netbook would probably do). Of course the computer would also need internet access to download the images from the image server. This could again be done using a wireless mobile hotspot.