For small items, add drones and the last miles savings get big.

  Weight of a typical car: 4,000 lbs. 
  Weight of a typical delivery drone: 80 lbs. 
  Typical drone payload: 5 lbs.
  5 mile drone delivery: ~2 kWh
  5 mile car delivery: ~100 kWh

So the breakeven is ~50 such items in one order.

▲ mciancia 4 hours ago | parent [-]

Lol, where did you get those numbers from? xD

Tesla uses something like 15kWh per 100km, so 5 mile drive is something like 1.1kWh

	▲	delichon 3 hours ago \| parent [-]
		Yeah I botched that. It's around 1.5kw/mile for an ICE car.