Do you have any sources or reading about this? I would love to see something more than conjecture about a VERY unintuitive idea. Newton was pretty adamant tha

Do you have any sources or reading about this? I would love to see something more than conjecture about a VERY unintuitive idea. Newton was pretty adamant that an object weighing 5k lbs (an F-150) would impart quite a bit more force than an object weighing 2k pounds (an economy car). If all of the force is being imparted into a planter, a tree, or the front of a 7-eleven, I'm still inclined to believe that more force, higher off the ground, is going to matter a whole lot more than a few extra square feet. One way or another the energy is going somewhere, and there is A LOT more energy in a pickup truck. Also, keep in mind, the crumple zone protects the passenger compartment, not the object being hit. The bumper of an f150 is right in front of a ladder frame to which several thousand pounds of iron machinery is bolted. I'll still take the smaller, faster stopping, more maneuverable, less energetic battering ram.