That brought back fond memories. Thanks. After I got my driver's license, the girlfriends and I would cruz down to the Jersey Shore;Seaside Heights. On Rt 37 there was a bridge/overpass that was made out of iron/steel grating. As a teen with a new license you know we used to fly down on a wing and a prayer to get there A.S.A.P., but when I got to that bridge, I had to slow to exactly 31mph to get the coolest sound driving over that grating.
If it hadn't been life threatening, or against the law, I probably would have forward/reverse, forward/reverse until the girls got fed up. I loved that sound. And I was always the driver.
I wonder if it's still there? That was in 73-75.