Looks like it's been a concept for a long time
This video is from the end of 2016
The FAQ suggests that customers are getting restless about not having a product yet.
Some of the FAQs
When will the Sunflower system start shipping?
How much will it cost?
I thought your system would be shipping by now?
What is taking so long?
How do you deal with current drone regulations?
Can I get a refund of my reservation fee?