text:  In IndyCar news, 27 full-time drivers took to the Iowa Speedway on Thursday for a Firestone tire test ahead of the Hy-Vee IndyCar race weekend in July, which is next weekend. They also were using the new hybrid engine, which will make its debut at Mid-Ohio next weekend. Again, IndyCar off this weekend will return on July 4th weekend for Mid-Ohio, and that will also be the debut of the new hybrid car.