Looks like Stefan GP will be on the sidelines no matter what happens to USF1:
Formula 1: Stefan GP Won't Take US F1's Place
Published Mar 4, 2010
CHARLOTTE, North Carolina — US F1, officially out of the Formula 1 lineup for 2010, will not see its entry taken by Stefan Grand Prix, but it is still uncertain whether the American team's status as a future competitor will be certified.
Team principal Ken Anderson said Wednesday he is awaiting word from the Fédération Internationale de l'Automobile (FIA).
"What we want to do is regroup, finish the car for 2011, be testing late summer/early fall...and be really ready for next year," Anderson told Autosport magazine.
US F1, a U.S.-based entry that received an invitation to join Formula 1 in 2010, had earlier sought permission from the FIA to miss as many as four races before entering competition.
The failure of US F1 and another new team, Campos Meta, to be ready for testing prior to the season opener March 14 has drawn withering criticism from pundits, but Anderson blamed the political wrangling of the 2009 season for putting his team behind schedule. For awhile, it was uncertain whether a breakaway series might be formed, and a renewal of the Concorde Agreement was not signed until August.
"Losing those four months was always going to be difficult to recapture, but we were on schedule right up until mid-January, and that was when some issues arose with sponsors that kind of locked us up," Anderson said.
The FIA, releasing a 12-team lineup, stated that "it is not possible for a replacement team to be entered for the Championship at this late stage," leaving the entry of Serbian Zoran Stefanović out of the lineup. He had purchased the assets of Toyota after that team withdrew abruptly at the end of the 2009 season.