IndyCar’s new vehicle, the IR-28, completes its first test at the Indianapolis Motor Speedway. Multiple outlets report that the test takes place on Aug. 1, with Alexander Rossi driving the car during the session. The reports describe the outing as the IR-28’s initial track run as the series moves toward its next-generation race car. The information comes from coverage of the test at the Speedway, where representatives from media outlets observe the car during its early on-track evaluation. Beyond noting the date, location, and driver involved, the available summaries do not provide additional details about the test results, lap times, technical specifications, or subsequent testing plans. Overall, both sources align on the core facts: IndyCar is running the IR-28 for the first time on Aug. 1 at Indianapolis, with Rossi at the wheel.