IndyCar and NASCAR will both race this weekend without spectators over fears of the COVID-19 pandemic.
IndyCar is scheduled to open its season Sunday on the streets of St. Petersburg, Florida.
Only essential personnel will be permitted to attend.
Competitors will also undergo a questionnaire for health screening before entry.
NASCAR will race this week at Atlanta and next week at Homestead-Miami Speedway under similar restrictions.
The NHRA has canceled much of the GatorNationals and IMSA rescheduled the 12 Hours of Sebring in Florida.