Say hello to the IR28, IndyCar’s first wholly new racer in over a decade and a half. Just like the chassis and engine, the hybrid system in the new Indy cars will also be completely new. A more traditional battery-hybrid system will replace the current supercapacitor system, offering “approximately 14 times” the battery capacity of the current system. The suspension setup in the IR28 is called the Custom AXIS Inertance Control Suspension System and will offer more freedom and modularity to the teams when it comes to suspension setups. IndyCar will test the first prototype later this week, so stay tuned for more IR28 coverage.