Recommendations for Designing a Cross-Device Coaching Experience

Abstract

A paradigm shift is taking place in the automotive industry, where combustion engines are replaced with batteries. Electric vehicles powered by clean energy reduce greenhouse gas emissions, for a more sustainable way of living. However, electric cars have a shorter range and are to a greater extent affected by the driver’s behaviour and other external factors, such as weather conditions. The need to teach electric car owners about their car’s performance has thus emerged. This thesis investigates how to coach users of electric vehicles to drive more energy efficiently while simultaneously enhancing the driving experience by utilising two interconnected devices, a smartphone and an in-car application. By applying a cross-device approach when coaching drivers, the feedback can be tailored to the context.

The research has been conducted with the user at the centre. By executing several user research methodologies and including literature studies on related work, understanding the user group, their context, and the problem space has been strengthened. From the insights gathered, prototypes were developed and evaluated iteratively with users which enabled further investigation into their needs. Based on all findings collected throughout the research, 10 design recommendations were established on the topic. These recommendations address three domains when it comes to developing a cross-device coaching experience: feedback, usability, and device. For example, the research result indicates that coaching via a smartphone should take place before a trip, in the planning phase, and after a trip, for evaluative purposes. Further, a combination of momentary and historic feedback is recommended together with transparent feedback that discloses the impact of external factors on the range.