Global Motorsport Media
2012 US Grand Prix promoter Tavo Hellmund is being sued.
Autoweek reports that the lawsuit has been filed by Texas attorney Randolph Ewing, who claims 5 per cent of Hellmund's stake in the US Grand Prix is owed to him for legal and business advice.
Hellmund has responded by insisting Ewing worked for free and never issued an invoice.
In other Hellmund news, he told the Austin American Statesman that his company Full Throttle Productions has done consulting work for proposed F1 races in Mexico, Argentina and South Africa.
But he insisted: "The US Grand Prix is the most important thing ... the next thing is to promote the US Grand Prix."
The newspaper said actual construction of the Circuit of the Americas' infrastructure will begin "soon".
And in other lawsuit news, the Munchner Merkur daily reports that F1's former commercial owner Constantin Medien is claiming $171 million in damages from Bernie Ecclestone and jailed German banker Gerhard Gribkowsky.