A Porsche and Volkswagen dealer entered a dune buggy into the 1970 24 hours of Daytona "as a novelty" with a Deserter GS, effectively a tube-framed Formula Vee car with a dune buggy's body.

They were running practice laps when Gulf Oil-backed JW Automotive, sent out its Porsche 917K practice car with Formula One Grand Prix-winning Jo Siffert who would intercept the buggy-bodied prototype early on his second practice lap, attempted to pass on the straight into the dogleg turn four, the two cars made contact.

Rather than get pushback from his Porsche VW bosses, Heishman withdrew from the race.

https://www.thedrive.com/accelerator/43165/this-dune-buggy-wouldve-raced-the-daytona-24-if-it-werent-for-porsche