Prolly not, it was a promotional competition at a local shop(Audio wharehouse, Saskatoon), they were putting two cars side by side with a light tree and a monitor in front (DB drag) mounted the mic to the windshield with suction cups and a spacer and gave you 20 seconds to rack the best possible score, I just burped it and waited for my time to run out.
On guy had (forget his name) had an older Chevy blazer with 4 Quad coil 18 inch Inhumans in a ported wall (dedicated spl rig, multiple amps and batts) that consistently pegged the meter at 170db.