TornadoVideos.net are using Google Maps to show the location of live storm chasers. The flashing cars on the map show the locations of storm chasers who are broadcasting live streaming video right now.
The storm chasers are experts in getting to the right place at the right time to document tornadoes, severe storms, hurricanes, winter and ice storms.
To create the map TornadoVideos.net have partnered with iMapWeather. This means that as well as viewing live streaming video from the storm chasers you can view live weather on the map. A good trick is to turn on the tornado probability option to find which of the live streams are most likely to find a tornado.