2012 US grand prix founder Tavo Hellmund is suing the Austin event's backers. The latest speed-bump in the Circuit of the Americas project is Hellmund's lawsuit against Bobby Epstein and Red McCombs...

2012 US grand prix founder Tavo Hellmund is suing the Austin event's backers.

The latest speed-bump in the Circuit of the Americas project is Hellmund's lawsuit against Bobby Epstein and Red McCombs, claiming he would have made $500,000 per year as chairman for the next decade.

Hellmund also wants "access to the ... books" and "declaration that he cannot be removed as a manager", the lawsuit claims according to the local Austin American Statesman.

Hellmund did not immediately comment, while Epstein said the former promoter no longer works on the project.

"This is just a latest step in a pattern of behaviour," said the Circuit of the Americas in a statement.

"Mr Hellmund uses negative press to try and create an advantage for himself at every turn."

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