Lamborghini would have been an incredible motor racing success in the late 70's if Ferrucio Lamborghini hadn't been an arrogant, whiny, pig-headed little man (in other words, himself) and cancelled Bob Wallace's infamous Jota SVJ project.
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When your top engineer/test driver can turn the single most revolutionary - in design - supercar ever produced into a phenomeonal GT race car (that was capable of shredding Ferrari's 312PB, let alone the Daytona Competizione) and you CAN THE PROJECT to turn it into an exclusive luxury/performance version of said supercar, you truly prove you lack testicles.
The R-GT simply continued the standard of mediocrity/nonparticipation Lamborghini set for itself when that silly little tractor man decided he could out do Il Commendatore. When it debuted in the ALMS with Krohn-Barbour Racing as a factory supported team, Dick Barbour had Peter Kox and David Brabham driving. This was a power team in the making that COULDN'T OUT QUALIFY GT CLASS PORSCHES.
The team started at Mid-Ohio 2004, finished 7th overall. It was a good effort on the technical Lexington course that put the car behind the Acemco/Mallock GTS Saleen S7R and ahead of the Flying Lizard Motorsports GT Porsche 911 GT3RSR. They were 11laps behind the leader, and on the same lap as both the 6th and 8th place finishers.
However, by Lime Rock (a fast course) they fell to finish 21st, 62laps down. To their credit, they finished the race, but they were also the VERY LAST CAR to actually complete the race. At Portland, the infamous twisty Oregon course, both Krohn-Barbour cars dropped out with mechanical problems.
After just three races and a reported problem with failing rear suspension uprights, Krohn-Barbour Racing stated flat out that Lamborghini wasn't even sending them enough parts to keep the cars on track, let alone helping them develop the R-GT into a competitive machine. Faced with the long sweepers of Mosport and the near-certainty of an upright failure at high speed, coupled with the completely uncompetitive quality of the car, Krohn-Barbour Racing withdrew both cars and severed ties with Lamborghini.
Barbour returned to the GT class with Porsches, and Krohn is now partnered with The Racer's Group in GARRA Daytona Prototype competition. Both are infinitely better off then when they were saddled with Lamborghini bull****.