Nightdrive
I’ve made a JavaScript simulation of driving at night time on the motorway. It’s hard to classify what it is. It’s not a video, because it’s generated dynamically. It’s not a game, because you just watch. It’s not a screensaver, because it’s not the 90s. Maybe it’s a “demo”?
Source: James Stanley - Nightdrive
Pretty cool, with lots of detail about how it works.