I don't think you could really call this a cellular automata, as that's defined by the cellular-neighbourhood-processing update rule. To put it another way, this looks like a 'vector' simulation (or automata) compared to GoL's 'raster' update.

There are certainly a lot of other fascinating cellar automata though! Even within 2-state-2d-totalistic (the class GoL is from) there's loads to see and lots of surprises! Well worth exploring! (there's an app called 'golly' that's good for that, and it's cousin 'ready' does related (also 'raster') 'reaction-diffusion' simulations.)