During my time working at VW, my teammates and I developed a modified version of RITE testing using a remote research observation system called the Wizard of Oz system.
RITE stands for rapid iterative testing and evaluation. It is a method of usability testing derived from the gaming division at Microsoft. The idea for this method is that usability issues are identified and solved as quickly as possible. – Source
The WoZ system uses live video, audio, car data, and Wizard of Oz speech and inter-faces to enable remote observation and interaction prototyping on the road & in a car. – Source
A breakdown of how to run a RITE test can be seen in the image below. Over the course of my time at Volkswagen we setup, and ran many variations on this testing method. We’ve developed variations of this test that aim to capture concept acceptance more than usability, and versions that test A/B prototypes. It’s a favorite research/prototyping method for me at the moment 🙂