Just had this thought while driving arround... it's more an idea for a B-grade movie... might already excist too?
In the light of tech horror like: The Ring, Pulse, White Noise, Shutter I present G.P.S.
A mysterious navigation device recovered from a horrible accident that leads its new users to a certain death... enter a destination and without noticing unexisting streets become visibile which you can drive... enter strange worlds beyond the grave... or something else for that matter
Now I think of it might be nice for Back To The Future IV
With best regards,