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LONI UNSER, ASHLEY FREIBERG, ERIKA HOFFMANN, THERESE LAHLOUGH Race Sonoma

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March 26, 2026

GRRL! SUMMARY:

  • LONI UNSER, ASHLEY FREIBERG, and ERIKA HOFFMANN represent Porsche’s Mobil 1 Female Driver Program in GT4 America competition at Sonoma, marking significant manufacturer investment in women’s motorsports development through structured progression programs.
  • THERESE LAHLOUGH campaigns in GT World Challenge America, joining three program teammates as part of Porsche’s seven-driver female initiative competing across multiple SRO America series this season.
  • ERIKA HOFFMANN’s No. 73 Kellymoss Porsche 718 Cayman GT4 RS Clubsport moved from Pro-Am to Silver class after co-driver Jack Parriott’s Bronze* status revocation, impacting championship strategy.
  • AMANDA BUSICK returns as commentary team member for GT4 America’s live streaming coverage on SRO’s GT World YouTube and Twitch platforms throughout the season.

UPCOMING:

  • GT4 America Qualifying and Race 1 – Friday, March 28, 1:55 p.m. PST
  • GTWC America First Practice – Friday, March 28
  • FOX Sports 1 Highlights – Sunday, April 5, 12 p.m. EST

LINKS TO RACER'S PROFILE PAGES:

LONI UNSER ASHLEY FREIBERG ERIKA HOFFMANN AMANDA BUSICK

gt world challenge america, gt4 america, porsche

GRRL! summary based upon reporting by John Dagys originally appearing on sportscar365.com