NTT INDYCAR SERIES drivers will participate in a 108th Indianapolis 500 presented by Gainbridge Open Test on Wednesday, April 10 and Thursday, April 11 on the famed 2.5-mile oval at Indianapolis Motor Speedway. On Wednesday, veterans will take the oval from 11 a.m.-1 p.m. ET, with Rookie Orientation Program and refresher tests from 1-3 p.m….