If you own your Uber car you can probably convert it to a yellow taxi. You also would have the option of having one or two drivers working under you and earning money for you while you rest or enjoy a day off.
Yellow taxis will soon have e hail apps installed. I oppose the apps on safety grounds and there are court cases now ongoing that might result in the apps being banned or changed. Yellow taxi drivers and owners feel pressured to use e hail apps. The driver apps will not use smart phones but will be installed in already existing equipment that is used for communication purposes.
If you want to know more about switching from Uber to Yellow you can contact Queens Medallion Leasing at 21-03 44th Avenue Long Island City right next to the upper roadway exit on 21st Street during normal business hours or other taxi management company.