Yes, nobody had SEEN that poor
child meet her fate, so likewise no eyeball could verify even that it had been
a school bus, not a UPS truck or oil delivery truck that had run her over.
Davey doesn't recall how heavy the snowfall was, but it is likely that it would have been substantial and perhaps unexpected; moreover, during near-blizzard conditions, visibility is squelched considerably and folks tend to stay indoors more.
Still, to this day, in Davey's dappled mind, the stark possibility of Dodd's culpability does exist.
How many UPS or oil truck drivers drink in the daytime?