A new era was unleashed Tuesday for IndyCar racing.

The new Honda 3.5-liter V-8 racing engine made a successful debut on the 2.73-mile road course at Daytona International Speedway with two cars making a “trouble free” testing session, according to a release from the Ethanol Promotion and Information Council.

It marked the first time in open-wheel competition that IndyCar engines ran on 100 percent fuel-grade ethanol as former series champions Tony Kanaan and Sam Hornish Jr. made impressive runs with the IndyCar Series’ latest engine configuration. The IRL IndyCar® Series will be the first major auto racing series to utilize a renewable fuel source in all of its racing cars during the 2007 racing campaign.