This final note today, in which the promise and the peril of Twitter is on full display. Chrysler — like all media-savvy companies out there — has a Twitter account or two. The main one, @ChryslerAutos, is used for general corporate branding and marketing. And, it seems, for ill-considered personal rants.

The person in charge of tweeting that account is now the person formerly in charge of tweeting that account after sending this the other day: “I find it ironic that Detroit is known as the Motor City and yet no one here knows how to **bleeping drive.”

**Except the word started with f, not b.