Car "Landed" in an Auto Repair Parking Lot

There's an auto repair shop right next to a highway off-ramp in Pittsburgh.  And people keep taking the exit too fast . . . ramping off a hill . . . and landing in the parking lot.  The owner says it's happened eight times in the last nine years, and a security camera got the latest one on video.  He says the Department of Transportation keeps putting up signs to warn people there's a sharp turn, but they just keep crashing through them.