VW the join F1 with 4-5 cylinder

The engines will reduce fuel consumption by 35 percent, series ruling body Federation Internationale de l’Automobile said.
Formula One is courting auto companies with rules that are more relevant to road car research after Honda Motor Co., Bayerische Motoren Werke AG and Toyota Motor Corp. stopped funding teams in the last two years as the credit crunch reduced sales, said Mark Gallagher, general manager of engine-maker Cosworth Ltd.’s Formula One Operations.

Volkswagen executives sat in on as many as 20 meetings at the FIA’s Paris headquarters in the last year to help come up with the engine rules, said Gallagher, who was also present. Volkswagen’s interest in the sport was confirmed by another meeting attendee, who declined to be identified because the company hasn’t made a final decision.

With VW helping with the Rules its pretty much a big yes for their entry and the unamed Company could be GM.

Source - Bloomberg