[chphipps]

Transportation.

Half of the energy used every day, worldwide, is used on transportation (cars, trains etc.). But is this energy well spent? I have seen first-hand, and so have you, that people spend their mornings unhappily commuting to work, school etc.

This needs to be changed, and given how fast technology has been advancing in recent years - change is coming sooner rather than later when it comes to transportation.

Great question by the way, have a look through YC's RFC list. https://www.ycombinator.com/rfs/#vrar