IMSA expanding VP Racing SportsCar Challenge to 10 weekends in 2026

IMSA's VP Racing SportsCar Challenge will expand from six to 10 race weekends in 2026, adding four LMP3 endurance races to the calendar next season.With the latest specification of 3.5-liter twin-turbo V6-powered LMP3 cars set to make their VP Racing SportsCar Challenge debut in 2026, these additional two-hour LMP3 endurance