On rare occasions I have the opportunity to hear National Public Radio's Car Talk program, which I find amusing as well as informative, which is saying something since I have little interest in cars beyond their usefulnes in getting me from Point A to Point B. (Okay, so I make an exception for a certain Ford GT, but that has more to do with the people involved than the car itself.) The shows usually feature a "Puzzler," which since it involves cars often leaves me clueless. But every once in a while (well, twice) there has been one that I have solved almost instantly, which of course makes me feel great. Thus the inspiration to share them with you all. The first was many years ago, and the second I heard today, so you can gather from that how good a Puzzler puzzler I am, or perhaps how often I hear the show. For a hint, I can say that my ability to solve them both so quickly was due to personal experience with the situations involved.
Puzzler #2I like this one: http://www.cartalk.com/content/puzzler/transcripts/199634/answer.html
I think I solved the ones you posted, but not instantly.
I suppose that if the designer and his wife can't agree on the origin of the Chevrolet symbol, Click & Clack can make up their own story. :)
The TAN 270 license plate is my favorite. If I had that kind of car, I'd want that plate.
But why not just TAN 90, Susumcorda?
Maybe to make it just a little more complicated? Also, I don't know what the normal pattern was in Massachusetts at the time of this Puzzler, but the three letter/three number combination is common for license plates.