[aerohead]

Historically, race teams will scrutinize the 'rulebook' from the sanctioning body, and if some 'technology' is not specifically forbidden, they'll show up like Carrol Shelby, and compete on a 'nastier' basis.
Smokey Yunick was famous for cheating in NASCAR.
Chrysler Corp. cheated year after year in the MOBIL ECONOMY RUN, and later bragged.
At Bonneville, any LSR achieved includes impoundment after the 'victory', with a mandatory engine disassembly and inspection to guarantee things were as 'advertised' by the owner/team. ( I suppose that the Southern California Timing Association has seen every trick in the book!)
Jim Hall's Chevy Chaparral 2J technology was banned the next season.
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You might want to take a gander at Ben Bolby's 2012 NISSAN Deltawing, Le Mans entry.