johnr: Thanks for the info! Already heard all that & electric trucks will not fit the applications where the customers are complaining on the fuel consumption of the new trucks. We know with cat converters and back pressures, engines are going to use more fuel. But in today's world we are dealing with budgets. When you want keep a customers and replace his fleet with these new computerized trucks that can not be messed with. And we hook up our computers and find the engine is running in spec. But is still eating fuel, and the truck is being worked the same amount of time as his older truck. So we are going to blame the operator for needing to change a bottle of fuel that did not make a whole shift? Glad you said 4.5-to 5 hours. How about 3 hours? Like I said everyone want to brag & say they have the cleanest running truck. Maybe they should do a fuel consumption survey on the IC trucks? Could be a great selling feature in this business. Especially when you know you do have the most fuel cost efficient truck. I know the manufactures have to comply with the same emissions. But they don't put anything in there literature or brochures that will tell you with complying to the government emissions. The truck will use more fuel! Bottom line is, it will cost you more money to operate the computerized truck. Just want to know if any manufacture is doing any testing on this issue? With all the electronics on IC and electric trucks today. It looks like the manufactures are trying to stay up with the competition? But they are getting away from the most important selling feature. A PROVEN PRODUCT!