I finally found the truck for Delg.
General Motors is developing a hybrid-electric drive system for its V8 engines that will enable GM to boost the economy of its GMT-800 full-size trucks by between 10 and 15% without compromising towing and hauling capacity. The hybrid Chevrolet Silverado prototype employs a conventional 5.3-L pushrod GM V8, rated at 213 kW (285 hp). Engineers have replaced the traditional starter and alternator with a 4.8-kW (6.4-hp) electric motor that is integrated into the engine’s flywheel. The integrated starter is not used as an assist motor, as on the Honda Insight and Toyota Prius; it provides instant stop/start capability and captures energy during deceleration. The stop/start function of the system feels similar to that of the Prius; customers will notice little difference other than the quietness while stopped. In other conditions, the prototype drives like a typical Chevrolet truck.
The coolest part of this truck, which I noticed today on KTLA5 was that it has a full electrical plug in the bed of the truck to power standard 120V (I think) appliances (like Saws, Computers, etc) from the electric motor. Very neat. Put on a waterproof top and you have “mobile computing power”. 
Alas, this is a “hybrid-mild”. Unlike the Prius, the hybrid component is only used to reduce the time the engine is running. Instead of increasing fuel efficiency into the 21.66/25.48 km/litre (hwy/city) like the Prius, it is still in the 8.49/7.64 km/litre range (according to US Goverment Fuel Economy website and w/ a conversion rate of 1 miles per gallon = 0.425143706 kilometers per litre). The good news is that that is still better than the non-hybrid version at 7.64/6.37 km/litre. Just an FYI, my 2001 Olds Intrigue, according to the US Gov Fuel Economy website has a fuel efficiency of 11.89/8.07 km/litre (sounds wrong from my calcs from my trip but whatever). The Prius is about twice as fuel efficient on highway, and three times as efficient in city. Amusingly, my current car is still more efficient than this new “hybrid”. Not a very promising sign.