Ford E-350 and E-450 Hybrids in 2008
Ford and Azure have agreed to build Ford E-350 and E-450 hybrids by 2008. In case you're wondering E-350 and E-450 chassis-cabs are the...
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https://iskablogs.blogspot.com/2006/11/ford-e-350-and-e-450-hybrids-in-2008.html
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Source: News Desk - Ford E-Series Chassis Get Hybrid Conversions
The system, using a Ford 5.4-liter V-8 gasoline engine coupled with an electric motor-mounted inline with the stock drivetrain, is claimed to provide mileage improvements of up to 35 percent. Some of the gains are attributed to a regenerative braking system, which recovers a portion of the vehicle's energy while braking to recharge the batteries.