Zipline's US customers aren't who you'd expect: Not so much early adopter tech bros but 80-year-old grandmas ordering stuff they need every day. (One ordered drone delivery 350 times last year!) One Wendy’s restaurant already does 50% of its deliveries via Zipline’s Platform 2 drone system. Dig into more lessons from the company’s rapid expansion from CEO and Founder @Keller on TWiST, recorded live at LaunchFest in San Francisco. (cc: @Zipline, @Jason)