IMSA
INDYCAR’s reactions to contend with the upheaval of its 2020 season highlight changes and a newfound inventiveness that could last for years to come.
Doubleheaders at Iowa and Laguna Seca plus a second race on the IMS road course in October bring IndyCar’s 2020 race count to 15.
IMSA’s split prototype classes solves some but not all of the problems created by years of a joint class.