ive delivered many times out of my own vehicle. good radio, heat and air when needed......
most i ever delivered out of my little izusu was 232 packages. that was the monday after the storm of the century. the center preload "ran" but they were not going to send out the drivers.
my biggest bulk stop was open, and i knew they would not have anything to do, so i offered to run that bulk stop and next day air stops to those that were open. that was a load of fun.
longest delivery one way was a mis-zipped christmas eve. i delivered kingsport, 37663 zip. that package was addressed to the right address in kingston but had the 37663 zip instead of the kingston zip of 37763. 146 miles one way.
since i was headed to florida for the week after christmas anyway, i offered to drop the package off on the way. i delivered it christmas morning at about 7:15. they lived about 5 minutes off i40, and were up around the tree. i just knocked and ho hoed when they answered the door.
as long as you get paid, and they pay you the mileage rate for your miles, there is nothing wrong, underhanded, or illegal. just easy money if you feel up to it.
d