I just got back from a trip down South which gave me an opportunity to observe biking culture in that part of the country. Despite the horrendous heat in places like Texas I saw a few bikers out there, some hitting it hard, others just out for a ride, and one or two using the bike for transportation. I was a bike jealous seeing people out since I did not bring a bike along. I particularly enjoyed seeing this guy who was riding on a steamy day in Louisiana.
A friend recommended this curious video about a helmet-less bike helmet. You can see a video here. They claim this is just as safe as a helmet and the concept is pretty innovative, even it if looks wacky in operation.