The situation with Dragon Racing is less clear. Jay Penske's team terminated its relationship with Lotus
at the end of last week in acrimonious circumstances that included the filing of a lawsuit for breach of contract claiming $4.6m in damages.
While Penske's father Roger has close ties with Chevrolet, it's still unknown whether Dragon will be able to sign a deal for Chevy units in time to allow them to field cars for Sebastien Bourdais and Katherine Legge at Indianapolis from this weekend.
Lotus are now left with one full-time IndyCar Series entry - HVM's Simona de Silvestro - but are also behind former F1 driver Jean Alesi appearing in a one-off run
in the Indy 500 with Firestone Indy Lights Series team Fan Force United.