A section of freeway that when driven emits a "sleep" wave which subsequently causes fatal or near fatal accidents. Any who die or are near dead are assimilated by a paranormal entity.
Well, there's this, in case you haven't read that one.
Also, I wrote something exactly like this (but with the added nagging feeling that you could hear a person fidgeting in the backseat) and then scrapped it for reasons of boring. How well you pull it off would really depend on how creatively you could take the "sleeping at the wheel but worser" concept and present it. A lot hinges on "assimilated by a paranormal entity", which could be either really creepy or really lame.
Doesn't sound like much when you put it that way but we started with a statue that kills you when you blink… what's the entity like?
I was thinking something similar to the pumpkin SCP. It would be a swarm of humanoid things. Shadows (i guess). Im not feeling this anymore.
What would you think of a piano similar to the orcarina of time in Majora's mask. A piano and sheet of music that when playing a certain passage slows/speeds up time?