Our products feature world-class design and advanced aerodynamics. The Cascadia® Evolution achieves up to a 7% increase in fuel economy compared to our first-generation, EPA 2010-compliant Cascadia model. That’s because Detroit has designed, engineered and manufactured the DD15® engine, DT12™ transmission and tandem drive axles to work together as one integrated Detroit™ Powertrain. This level of integration maximizes fuel economy, lowering your Real Cost of Ownership℠. And we also offer alternative fuel and lightweight options that are customized to fit your business needs.