Team US F1's Formula 1 hopes appeared to be over on Tuesday, with high level sources revealing to AUTOSPORT that the outfit has now effectively closed down.
Against the backdrop of weeks of uncertainty about the future of the American team, which had been struggling to get a car ready for the start of the season, sources have revealed team personnel have now been informed they are no longer required as the operation could not continue in its present guise.
AUTOSPORT understands that shortly before lunchtime, production manager Dave Skog informed those staff who had remained at the team during its recent troubles that they were being put on unpaid leave - even though they remain technically employed.