Plasticmerc... Sez hoo? Pilotless biz jet?
People underestimate the complexity of the challenge to do this. Google recently stated we wouldn't be seeing large scale availability of driverless cars till at least 2025 due to this factor. While pilots may consider many of their flights routine, we underestimate the subconscious use of our imbedded experience to make constant safety related decisions through the entire duration of even a routine flight. It is not just weather avoidance.
None of the new airliners such as the A350 have this technology as part of their future proofing and the certification process to retrofit the technology would be long and costly.
No one has ever explained to me how an automated system would ensure that a takeoff in icing conditions had all the boxes ticked