Holley High Voltage Experience Returns To Sonoma Raceway July 9-10 Holley High Voltage Experience Returns To Sonoma Raceway July 9-10 Blane Burnett2022-08-11T16:17:22+00:00 Holley's High Voltage Experience event dates and location are confirmed! Holley High Voltage Experience Returns To Sonoma Raceway July 9-10Blane Burnett2022-08-11T16:17:22+00:00