Gravity is the biggest factor. In order to carry an average size and weight package, requires a larger drone, with larger propellors, larger motors which requi

Gravity is the biggest factor. In order to carry an average size and weight package, requires a larger drone, with larger propellors, larger motors which requires ever bigger batteries. Same with increasing range, yet more battery capacity is required. What is overlooked is that EVs weigh 50% more than the equivalent capability fossil fuel powered cars. High energy batteries are heavy. Our roads are subjected to increased wear and tear.