Pfft. You don't even need a CDL for a truck that size.
Even so, at 65+ mph, a Ford Ranger will kill you just as dead as 80,000 Peterbilt, when hit by one.
Which really helps with a point that I've made multiple times over the years; banning firearms won't reduce violence. Also, if one is deemed to be so bad that they cannot be trusted to possess firearms, how can we trust them to drive, or buy gasoline, or own rope? The first murder on historical record was committed with a rock. Others have committed murder without use of a weapon, at all. I also seem to recall reading about a guy who was killing kids at a preschool, armed with a hammer.
Basically, anyone who is both diabolical and creative, can come up with plenty of ways to kill multiple people, without having to fire a single shot. Hell, you don't even need to be all that clever. Any idiot can figure out how to rent a Uhaul, and drive it into a Walmart.
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