Your question is Define Successful Automotive UI. Take a moment with it on the right.
Talk me through your thinking if you like. When you're confident, submit your answer and I'll grade it like a real screen (7/10 or better passes).
You're working on the interface for a digital product, and the team is debating what separates a polished UI from one that only looks good in reviews. You need a clear way to judge design quality beyond visual taste.
What are the key elements of a successful UI design?