Google Cardboard
Google's self-driving car may be many years away, but Cardboard — a fold-it-yourself virtual-reality viewer — can take you anywhere you want to go. Just slip your Android smartphone or iPhone inside, download the free Google Cardboard app, tap the device's magnetic button, and "fly" around Google Earth, take a walking tour of Versailles, or examine cultural artifacts close up. Check your app store for more you-are-there games, tours, and activities.
