The legend goes further: if any person becomes the rightful owner of all three, then he or she will become “master of Death”, which has usually been understood to mean that they will be invulnerable, even immortal.
The entire truck is bulletproof, with 12-inch steel doors, invulnerable tires, and can sit directly in the middle of a fuel fire for up to 60 minutes without the cargo taking any damage.
Guthrie is often portrayed as one of the team's leaders and, in the comics, has the ability to blast himself into the air at unbelievable speeds, remaining completely invulnerable while in flight.
His healing factor works on an order of days, not seconds or minutes, so even though he is super-agile, super-strong, and can shoot super-strong webs, he's not completely invulnerable.
Moreover, he was a boy whom no man could hurt; an invulnerable and dodging serpent who, when chased into a corner, flew out again between his captor's legs, scornfully yelping.
Margaret's voice was so soft, and her eyes so pleading, that Mrs. Thornton was for once affected by the charm of manner to which she had hitherto proved herself invulnerable.