Respectfully I disagree. People who put serious horsepower mods on their car and racers in general talk.....a lot. I only mile/runway race but a lot of the people I meet do open road, mile, drag etc. They all talk to the best racers asking what works, who works on your car, whose parts you recommend etc...and reputation is everything. The general public can be snowed but from a business perspective he is alienating the very community that will buy his parts/services. It is a small world in racing and I would not have understood that until I got into it. The things I hear about amaze me and I am only in it in a very small way.Objectively, I don't see much upside for PPR to do an encore run. It seems they have accomplished a solid business objective. 1) Guinness record; 2) Slick marketing video; 3) People oooing, ahhhing, and wowing around the world on highly visible media (Top Gear, Carbuzz, etc.).
OTOH, the potential downside of an encore run is huge...anything from blowing up to finishing last...which could effectively ruin the business objective.
The controversy over his run seems to be contained among a very small number of mile enthusiasts, which is likely to have little to no effect on PPR's business, short of protesters with placards on a picket line.
You are not going to get a Hennessey, Heffner, Accufab type positive rep by not having results that can be proven and reproduced. There is no business upside in this for him.