Her collection includes a sports car made in Italy by Michelotti and brought to the UK in 1965 as a prototype for Triumph - the Fury.

The making of OTT took Mark a year, and saw various prototypes tested and feedback gained to find the best way to present the data.

Because she was not a ceramicist, she drew her designs and occasionally sculpted her prototypes from foam and designers clay.

“We are now setting up a four-car pilot to demonstrate real life working prototypes to convince funders that this is workable and scalable.”

A team led by researchers at the University of Washington has created a headphone prototype that allows listeners to create just such a "sound bubble."