Mar.4 (GMM) 2012 US Grand Prix founder Tavo Hellmund is suing the Austin event 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."