I was a few hours outside of Los Angeles, tooling down I-5 at the wheel of a sleek Audi A7 on a gorgeous day when a little girl in an SUV smiled and waved. I waved back. With both hands. This immediately freaked her out, and she started jumping up and down. All I could do was laugh, knowing my vigorous wave was in no way a safety hazard. In fact, I hadn’t touched the steering wheel in more than an hour.
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