Im thrilled to see something like this taking flight, congrats!

I have two questions:

1) Can you tell us about your start-up process? Aside from your all-star team, I can't even imagine how you could have brought this to reality. I can't even imagine how much capital and space a prototype would have taken. At what point did you decide that it was time to apply to YC? Were there other investors? How much design work did you have completed/prototyped when you starting talking to investors? (sorry I know this is 5 questions)

2) Are you hiring?