General Motors Corporation transit.metrokc.gov/am/vehicles/hy-diesel.htmlIn May 2004, Metro began taking delivery of 235 hybrid diesel-electric buses to replace the 236 Breda buses built in 1990-91 operating on routes using the Downtown Seattle Transit Tunnel – 213 are bring purchased by Metro and 22 by Sound Transit. The first two dozen hybrids went in service in South King County on June 5. All 235 will be on the road by the end of 2004.
These are the first hybrid articulated buses in North America. They were made for Metro by New Flyer Industries, with a hybrid electric drive supplied by Allison Transmission, a division of General Motors.
The Allison parallel system provides both a mechanical and an electrical path through the drive unit. As the bus accelerates from a stop, electric drive predominates. Mechanical gradually blends with electric until at highway speeds, the drive is purely mechanical.
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Same choice for my personal vehicles. GM products work best for me.
For those of you with different preferences, as "W" says, 'I appreciate that...'