

I mean, the expansion of the universe is a wave propagating with a potentially infinite wavelength. Not necessary for it to be any light stretching from the beginning of the universe, but also not impossible afaik.
The wave would probably interact weakly with anything making it very hard to detect. And depending on the initial burst it will probably also have it’s energy too spread out to be of any noticeable amplitude.
Wohoo, blazing into the future!
Welcome to the 70s - an exciting decade for infrastructure! You can now look forward to the coming of planned denser suburbs with modern apartment blocks, local parks, museums, sports facilities, town square and offices. Planned water, sewerage, power for the whole suburbs, including beatification of associated utilities and waterfronts!
Maybe you’ll get some of the newfangled technical marvels of tram or subway between suburbs and city as well!
We can only hope - and look to the future!