Concept 2: Remote Testing
This one is straightforward. In many cases the product needs to be tested with the specific target group — e.g. students, before the first job, 25–27 years old, blond hair, height: 150–160 cm. Now, from my own experience, I can tell you that finding any users for testing the product is a tricky job. Finding specific ones — multiple times harder.
This becomes easier if the participant doesn’t need to come to a specific physical location. That is simply because then I can invite them from anywhere around the world.
If I already have my scenario in VR, I can also easily distribute it to any location around the world, e.g. as WebVR app. Worst case, for more complex tests with special hardware (e.g. 6 DOF pneumatic platform for car testing), I could invite them to the Location-Based Entertainment Center (LBs) in their region, where all hardware would be provided.