Let's not derail the thread with images/memes, we should try staying on topic.
I believe that the Big Rigs truck should simply be 9-B or whatever tier is calculated using the kinetic energy of a truck based on its speed ingame/speed based off of its real life model. The speed for reversing should not be used, given that it's essentially a glitch. Unless there's a specific statement regarding a glitch is canon or intended, then it would be usable, but this is not the case. A feat via an unintentional programming error being calculated does not mean it should be usable, which would be even further supported if it was later patched,
as was the case with this one.
Even if it doesn't get patched but there's still no context like "this is an intended feature even if it is a glitch", then it still shouldn't be used.
As for the Paperboy profile, conceptual manipulation resistance sounds really iffy considering there's nothing to support "dodging the grim reaper" as being resistant to death. If the grim reaper in Paperboy is very specifically stated to define the concept of death
(E.G, a person was shot by a gun and is rendered in a state of extreme harm to the point where they can be considered dead, the embodiment of death in said verse - which say, for this example, is a chihuahua that runs toward the body and drags it into the underworld - comes running towards the person but the person just slaps it away and the person in question is alive again, then it can be potentially considered an immunity to death manipulation, but this example is more or less resurrection). The thing is, the death in Paperboy appears to be a generic enemy with nothing supporting that it's some kind of concept of death. The grim reaper is usually the representation of death, it's not always some kind of conceptual entity in games, it can just as easily be some kind enemy draped in a black hood wielding a scythe (which is the case here).
TL;dr:
Big Rigs - 9-B and whatnot using normal truck speed seems pretty okay, not the speed glitch stuff, though.
Paperboy - Everything aside from the conceptual stuff is okay to me.