Nissan has announced that it has developed self-driving seating called the ProPILOT Chair which moves people in line on its own using a series of sensors.

Nissan has repurposed the technology from self-driving cars in a surprising way. 
The company has created an autonomous seat called the ProPILOT Chair which allows people to be seated while waiting in line and moves them up as customers are called.
As a press release states, the chair “detects and automatically follows the chair ahead of it, maintaining a fixed distance and travelling along a set path.” 
A video of the chair in action shows several people waiting in a seated line for a restaurant; when one or more of them gets up to go inside, the empty chairs shift over to the end of the queue on their own. 
The footage also reveals some of the technology involved, such as a weight sensor in the base which communicates when a person has stood up and sensors that tell the chair where to go. 
Nissan is offering different restaurants the opportunity to help test out the chair in 2017, with establishments being encouraged to tweet their interest.