Complex sentence: Unfortunately, their car gets run off the road by another car on "scenic" Route 606 and they become lodged and stranded in a snow drift, where they are preyed upon by the spirits of those who have died there in the past.
Split into simpler sentences: Unfortunately, their car gets run off the road by another car on "scenic" Route 606 and they become lodged and stranded in a snow drift. There the two are preyed upon by the spirits of others who have died there in the past.