I do not know if I will ever purchase an Apple product, but I think the single biggest factor in self-driving cars gaining acceptance would be an Apple logo. They could park a "selfie booth" at large malls and have a contest with a built-in camera pointed at the driver's face. Then selfies taken in Apple cars would be inherently better than selfies taken with sticks and mirrors and people would want mobile photo booths.
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Documents confirm Apple is building self-driving car | Technology | The Guardian