No surprise. Given they have patents for airborne warehouses (dirigibles) and drone recharging stations on lamp posts and have been exploring driverless trucks equipped with drone delivery for the last mile and even underwater warehouses, it's about time they focused on near term driverless transportation systems. Their logistics expertise and experience with 30K+ robots in their warehouses gives them some advantages and 'street cred'.
But while they're doing that, who's going to work on Amazon Forms?