My phone knows how to route me around an accident miles ahead in real time, but still hasn't figured out what the hell I'm doing when I pull off the road into a gas station.
I wish at the end of our life we get a grand total of all our body's stats: Miles of hair we grew, gallons we peed, liters of blood we pumped, pounds we crapped, words we spoke, miles our texting thumb scrolled, etc.
Our phones can track our locations, and Google even keeps track of this information. It would be really cool if every time you added someone to your contact list, Google told you how many times your paths have crossed, and when and where it happened.