I imagine there is an increase over last year, but every year there are expansive rentals of trucks. In our area we find that sometimes multiple trucks meet at the grocery store parking lot and further pass out packages.

I wonder if the issue is more the volume over the year never let up and rolled into a marginally increased holiday shipping or if it's really a multiple factor of shipped packages over last year.

Either way, Penske , Uhaul, etc. who've probably had less rentals this year vs previous, must be happy to see their stuff being delivered.

Even amazon has people delivering from their own cars around here.

I doubt it, those companies probably love this arrangement as almost no one moves in the winter.

Look at the directionality of prices for one way rentals. Because of the outflow from big cities NY area pickup -> Southern US dropoff prices are still 3x+ vs going the other direction, where I believe they used to be similar prices both ways.