TerraPass updates online CO₂ calculator

It's a minor change, but over at TerraPass, the carbon-offset-powers-that-be have added a comparison bar to the online emissions calculator. Now, when you input information to figure out how much your indulgence TerraPass CO₂ offset sticker will cost you, you'll also see a yellow bar that compares your annual emissions with the average U.S. car. The blog entry that announces this addition also asks us for our input on the change. I like it, but would be very interested in seeing a bar that represents the average TerraPass customer's vehicles. Are the users driving eco-cars or not? Your thoughts?
Related:

• CO₂ offset milestone: 100,000 TerraPasses sold
• Survey of TerraPass members finds they're not buying away their guilt

[Source: TerraBlog]