Ooooh, I want one of these in my neighborhood. Check out the awesome stats on the engine:

• Particulate Matter (PM) reduced by 90 percent over the cleanest diesel buses now in Metro’s fleet
• Carbon Monoxide (CO) reduced by 90 percent over the cleanest diesel buses now in Metro’s fleet
• Hydrocarbons (HC) reduced by 90 percent
• Carbon Dioxide (CO2) reduced by 40-60 percent
• Nitrogen Oxide (NOx) reduced by 50 percent

When Washington state mandates biodiesel (B5?), there is likely to be even more emission reductions. Ok, the next question for me is why the “big heavy box” design is still around. What if they took old airplane fueselages that are doing nothing but gathering dust and repurpose them for public transportation? They are light, strong and probably far more efficient. If they rode high-enough you wouldn’t even need bumpers on the fueselage, just the chassis. I’ll see if I can doodle something into an example.