I did drive my roadster to El Mirage a couple of time years ago. Never ran it, though.
In 1972, my first year at SpeedWeek, I accompanied my friend Phil Stevenson as he drove his 55 Chevy wagon from Rialto, Calif., to Bonneville. He was a Cadillac fan and it had a 390 in it with a 6-pot manifold. He bought the manifold for $15 after convincing the owner it wasn't for a Chrysler. I had a trash can with 14-15 97s in it that I gave him. He salvaged 4 of them and blocked off the center two. It had a Jet-Away Hydramatic (not exactly quick) and we had an uneventful trip. When we arrived there, we put on 18-inch Halibrands (with 3 lug patterns in them) -- one tire was an Indy tire, the other was a Bonneville tire. One was 3/4-inch taller than the other. Both had plies showing thru and were stamped "Good for 150 MPH".
He wanted to go 150 -- and ran 149 a couple times as I remember. He won what then was a yearly award for going the fastest with a car driven to SpeedWeek. Don't remember the name of the award, but it later disappeard, i guess. I'm told that it was because some were claiming it after driving from the Stateline parking lot. It figures.
I ended up with the 18s which I put on my sedan 25 or so years ago.