Carrier Transicold's Vector 6600MT hybrid trailer refrigeration unit provides the highest refrigeration capacity of any multi-temperature unit on the market, and delivers up to 20 percent greater fuel-efficiency than its predecessor. It has Carrier's exclusive Deltek diesel-electric technology, which features high operating efficiencies, significantly reduced maintenance requirements versus conventional belt-drive systems and an electric standby option. In addition, technological enhancements to system components and operating software and a more efficient system design enable higher performance and greater efficiencies than possible with Carrier's first-generation hybrid systems.