Somewhat off-topic (I wasn't pulled over) but..."No, it's fine," he says, "I believe you. But how would even put the plate on? And what is that front black thing on your car? Is that a cover for something? What kind of car is this? It looks great. I'm retiring this year and I'm going to buy a new car and I'd love one of these." He proceeds to tell me that he's not going to give me a ticket or anything for the front plate, but that he'd like to know more about the car. He asks about charging, how it drives, etc.. He was very nice and asked if I minded taking a few minutes telling him about it. I said I was happy to tell him about. I was so relieved that I wasn't getting a ticket (and I wasn't in a rush to get anywhere) that I had the rather bizarre experience of explaining/selling the car on the shoulder of the freeway to a police officer!
The second time (/grin) that I was at the Buellton supercharger, a motorcycle cop (BMW) chatted me up while I was burning time watching videos on my tablet. All the normal questions. "Normal, human being chat" rather than a cop-citizen conversation. I think he was stopping for lunch or somesuch. Anyway, very interested in the vehicle. And I confirmed that the omg-hellafun road to Atascadero was indeed a 55mph speed limit despite the absence of signage along most of the route.