While no one has left a comment yet, I have heard from three people already about Carbon Trace. That’s great. Please do send e-mail (for now, see Rhetorica for contact information) or, better yet, leave a comment using the comment feature. I want to know about the commuting experiences of other riders in Springfield and around the world. I’m looking for answers, too.
Carbon Trace already shows up first in a Google search for “carbon trace” 
I’ve expanded the blogroll this afternoon. Please suggest sites.