I guess It's about liability and reproducibility. When someone does harm with his/her car, holds the civil (and sometimes penal) responsability of his own acts

I guess It's about liability and reproducibility. When someone does harm with his/her car, holds the civil (and sometimes penal) responsability of his own acts and usually cannot do harm more than once in a very small timeframe. In the case of autonomous IA, the company making/coding the vehicle software will be liable, and the problem is very likely to show again in a short time period. That makes this kind of companies technically on the verge of bankrupcy because they are a good target for class-action lawsuits.