A segment from the CBS News' Sunday Morning show on "freedom machines":

The piece discusses the increased interest in bicycling that has accompanied higher gasoline prices. I have noticed more people riding on the roads this summer; unfortunately, a few of them appear to have not yet mastered safety rules on riding with traffic.

As a cyclist who rides in a city that essentially has no bike lanes, it's fascinating to see what Portland, OR, has done in establishing a 300-mile bike network. I wonder what kind of cultural changes we could experience in Knoxville if we had a similar commitment from community leaders?