The site aims to distribute vaccines to 10,000 people in a day. Author: Eline de Bruijn, Kevin Reece Published: 1:28 PM CST February 1, 2021 Updated: 4:32 PM CST February 1, 2021 Updated at 4:32 p.m. with additional details, quotes throughout. Starting Tuesday, Texas Motor Speedway will be home to the largest drive-thru vaccine clinic in Texas, and possibly in the country, Judge Andy Eads said Monday. The site aims to distribute vaccines to 10,000 people in a day. The first clinic starts Tuesday at 7:30 a.m. for people who are already registered through Denton County and have an appointment. Two more clinics are planned to open at 7:30 a.m. Thursday and Friday, as well.