An autonomous car is in some ways a user iner. People learn their way around it, but when you break the metaphor people start doing weird stuff. How do you build these so that they're comprehensible to users? There's this very reflexive distrust, dislike of a vs that goes on among people who for whom possessions are main way of getting around. And i think what we were offering is part of the solution in that,. But it's not a complete problem. It a solution of that.