Amazon is also engaged in self-driving cars
According to the source, about a year ago, Amazon formed a small (about ten people) group, whose mission is «the study of possibilities of self-driving cars».
Of course, this does not mean that Amazon plans to develop and release such vehicles. The largest online store envisions a proliferation of self-driving cars and trying to assess how beneficial it can be to use them for transportation of goods and delivery of orders.
If the rpm is Amazon reducing costs at any stage can give a great advantage. The advantages of self-driving cars is the lack of need for drivers and the possibility of almost continuous operation.
Another possibility is the use of self-driving cars in conjunction with unmanned aerial vehicles. By the way, a similar bundle, but with the usual, not self-driving cars, is testing a delivery service UPS.