With a whoosh of air, the subjects left the ground – either controlling their flight by a series of arm motions, like Superman, or as a passenger in a helicopter. As they scoured the city, wall-mounted speakers gave the impression of wind whistling by; powerful speakers in the floor produced vibrations to simulate riding in a helicopter. The experiment was set so that two minutes into the simulation, no matter what mode of transport, the subject found the sick child.
"If we can identify the mechanism that encourages empathy, then perhaps we can design technology and video games that people will enjoy and that will successfully promote altruistic behavior in the real world."
Seems a bit dark-artsy, using a known cognitive bias, even for good ends, but probably nothing out of the ordinary.