To understand how ridesharing has changed for the 20 biggest ridesharing cities in the US outside NYC, LA, and SF by finding answers to these questions: one, which are the 20 biggest ridesharing cities in the US outside NYC, LA, and SF; two, average number of monthly rides in these cities before COVID-19 and currently; three, estimated size of that rideshare market; and four, number of private car owners in that city.