This can either be OEM or an after-market add-on and
be known as the HBR (as distinguished from the HB which
already taken). It is a combination of those ubiquitous
wooden bead seatcovers and those pin art toys - all
to your car's external sensors.
The HBR provides
continuous situational awareness of all
vehicles and obstacles within a 360 degree radius of your
vehicle. The centre of your back represents your vehicle
while the Haptic Back Rest discreetly lets you know the
taxi trying to sneak up around you on the shoulder
and figuratively) and the truck coming up your behind.
(Could be painful, that)
After a bit of use, your mind would not even be conscious
the HBR's movements but you would just 'know' where
the locations of all hazards around you. As a bonus,
when stuck in
the HBR can provide soothing waves of massage up and
back as stress relief.