As I was downloading data sets from the NYC portal (www.nyc.gov/opendata), time was ticking waiting for one 22GB CSV.
As a Hyper file, it was under 2GB -- and that got me thinking!! Open Data portals need to include Hyper as an option.
If you agree, please give this a thumbs up on the Tableau Ideas Forum. I've already suggested this to the NYC Open Data office, which is a big first step.