MADISON, Ill. (KTVI) — A Corvette goes airborne. Nearly flips mid-air. Slams down and tumbles over a guardrail. And somehow, the driver walks away unscathed. It all happened at World Wide Technology Raceway in Madison, Illinois, last weekend, all captured in a shocking video that's quickly gone viral. According to a WWT Raceway spokesperson, drag racer Jason Hoard survived the frightening crash during a high-speed test run on May 31 in preparati…