Feedback from a dedicated workshop on virtual testing as an optional alternative to physical tests in UN Regulations and GTRs. The UK/EC proposal, based on UN R185 ADS, and OICA’s multi-layer approach are presented. Outstanding issues include authority and technical service qualification requirements, definitions and terminology, credibility levels, and uncertainties and safety margins. Participants proposed organizing another workshop in January, establishing a small working group, and requesting written contributions to improve the UK/EC proposal. A new status report is expected during the 201st WP.29 session.