Jakebud,
Just curious. How do you know the guy was driving an ETH/DEE? I can understand how you could tell the truck had a manual if you noticed the absence of the auto shift lever, or saw/heard the guy grab another gear, but unless you were able count as he rowed through all the gears, how do you know it's not a 5 speed.
I'm not being a smart a$$, I just wondered if there is some distinguishing feature I'm not aware of that allows one to distingusih between a manual ETC and an ETH without looking under, or inside the truck?