I know an engineer who took a job in 2006 to help develop a fully automated burger cooking station. He was sworn to secrecy and was made to sign multiple nondisclosure agreements. (but I know his client uses a pretty redhead in their ads)
He held the job for a few years, but the system was never implemented. A combination of technical problems and increasing fears by the client that they’d become the target of left-wing protests, boycotts, and threats from politicians once word got out.
Why do I think that invention may be taken out of mothballs, sooner rather than later?
There are already several of that kind of automated system going into production now, in the era of the $15 minimum wage.