The test at Mid-Ohio was just the first of a programme of outings for the new car over the next two months as it's tried out across a selection of IndyCar venues by Wheldon and Bryan Herta Autosport, with the next test on the 1.5-mile Texas Motor Speedway oval.
"We want to make sure the basics are right first before we go pushing," said IndyCay's vice president of technology Will Phillips. "We've got aero targets and straight-line speed targets that we're looking to see."
Testing will be completed at the end of September; engine suppliers Honda, Chevrolet and Lotus will then receive an early advance chassis in October to allow them to get on with the fine-tuning of engine development and the design and build of aerokits for their teams to purchase. Teams will start receiving their first regular production chassis by mid-December.