They did race them. T. E. Griffin, a factory driver, drove one to a record for a four-wheel vehicle at 1 min 6 sec for a mile at the Chicago automobile
Greece is probably Ford's best chance of a good result this year. They are the only team with experience from the event and it's their best rally historically.
It's not about the cars that must have a valid FIA homologation. There are national classes as well.
But the car must have the fuel tank and fire
Day2 Puma test gallery
Ofcourse they have to fit FIA rules, when racing on WRC event..
That's why Kaur had to drive R5 last year and not his Fiesta proto + Gross had