A spokesman has denied the wind is falling from the sails of the 2012 US grand prix.
The Texas official who approved the state funding for the Circuit of the Americas project is being sued, and the Austin City Council on Thursday delayed a vote on the receipt of the money.
Now, the local Austin American Statesman newspaper reports that construction efforts at the site of the formula one circuit have "slowed noticeably".
And investor Bobby Epstein warned: "If things get delayed any more, job layoffs are a certainty and construction spending will stop."
But project spokesman Jeff Hahn moved to play down those kinds of fears, explaining that the Circuit of the Americas is quieter at present simply because the excavation phase of the construction has wound down.