After thinking about it, I am still staying skeptical that Martha is the Red Queen. The promo is vague at best and could be taken out of context. I'll admit, I have no problems being proven wrong, but it is not the first time a promo has been somewhat misleading.
When we saw the Red Queen with her face covered in shadow, those WERE Annette O'Toole's beautiful gams we saw. She's always had great legs, and those certainly looked like them. But I suppose we'll find out for sure soon enough in three days.
I dunno. I can't tell who a person is by an awkward angled shot of their legs. Whoever was in that car, I highly doubt it was the actor of who ever is going to be Red Queen. It was probably just some extra.