Founder Hellmund sues 2012 US GP

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."