Product managers believe that home delivery of groceries is a market that is ripe for disruption. The product managers at Domino’s have stated that “time is the enemy of food”. One things that product managers have to be aware of is that pranksters can attack their robots at any time. Self-driving cars are hard to make – self-driving robots are much easier. However, the product managers at Amazon have come to a realization that they need to find a way to save money.