Maggie and the accident

I had a thought.

I don't think Maggie was the one responsible for Adrienne's death and the accident.

Will was the only car driving in the opposite direction.

Adrienne and Sarah were coming from the Kiriakis Mansion.

Maggie was coming from the Kiriakis Mansion.

So how could Maggie run Adrienne off the road and Will witness it? It doesn't make any sense. 

I assume they were all driving on a highway or something with the guard rails there, not a random street.

I think we will find out Summer caused the accident, since she's a useless character anyway.

Side note: Suzanne Rogers was fantastic today! Wow, I was crying right along with Maggie.