When I first moved to Palo Alto in 2014, I didn't have my own car so I used Uber several times a week for almost a year. I would have to estimate at least a third of my UberX rides were in Priuses, and a few of my drivers had talked about how they had financed their Prius through something related to Uber. Since 2017, I honestly can't remember the last time I had an UberX driver with a Prius -- it's almost always Honda Civics/Accords or similarly low-priced vehicles.
It also seemed in 2014-2015 that far more of my drivers seemed happier, more professional, and enthusiastic about talking how much money they made. Nowadays I rarely if ever have that conversation.