Sunday 25 July at 12:01 : Jul.25 (GMM) Bosses of the failed USF1 project lied and did great damage to formula one's potential to break into the crucial American market.

That was the verdict of McLaren chief Ron Dennis on Saturday during his visit to the NASCAR event at Indianapolis.

He said British journalist and American engineer Peter Windsor and Ken Anderson, the joint principals of defunct USF1, "didn't tell the truth" as they pushed to debut in 2010.

"They never had the depth, they never had the understanding, they never had the resources," Dennis charged.

According to Autoweek, he said they did "more damage to F1" than any of their predecessors, and insisted that "no one in F1 stuck their foot out" to thwart USF1's success.

Meanwhile, as Austin pushes to get ready for its 2012 hosting of the United States grand prix, Dennis revealed that there are two other projects to bring F1 racing back to America.

"There are three very, very serious and separate projects," said the Briton, declining to give details because it's "not for me to share".