I just love this part of a bigger photo... I had to slice off the water marked area. Then I learned how important the car in the watermarked area was... a Super Duty 421 Tempest at the Daytona 2nd Continental Race, a 250-miler.

https://www.facebook.com/photo/?fbid=26555912034081287&set=gm.1751308582811627&idorvanity=226675368608297

at the race when the all-aluminum 427 Mystery Motor made its advent within a pair of Mickey Thompson 1963 Corvette Z06s, this barely noticed Pontiac made an astonishing debut

The Chevy 427 big-block—the first of its breed, was out to punch the automotive world in the proverbial nose— but there was this Pontiac to get around.

And the Pontiac was hustling around the track and lapping everyone, including one poor Ferrari eight times. 

Others were lapped multiple times, too. Even the second place finisher, the legendary A.J. Foyt would succumb, he was 2 laps down

Instead of Chevy introducing the world to a victory with the Mystery Motor, the best they could do this day was to come in second.

But then... the SD Tempest disappeared. 

The Pontiac was sent back to the shop in Indiana and sat for a short time before reportedly being purchased by Mercedes-Benz, who promptly shipped it back to Germany and completely disassembled every nut and bolt for a “competitive” inspection. The car has never been seen again and is listed by most hard-core SD experts as “destroyed.”

https://www.motortrend.com/features/1812-pontiac-tempest-bested-427-corvette-1963

In  1963, Pontiac built 12 lightweight Super Duty Tempests, six station wagons, and six LeMans coupes to assault the 'strips—which they all did, with the exception of one coupe.

It was plucked for the first ever NASCAR Challenge Cup (above race)

https://www.hotrod.com/features/1963-pontiac-lemans-wins-the-nascar-challenge-cup