Duh, no matter how "massive" the "heat-trapping greenhouse gases" are, CO2 only "traps" 15 micron radiation, which is a tiny part of the surface emission spectrum, and doesn't even do that but reemits it, and can do no more than return part of it to the surface, not even slowing...
Milk delivery carts, those few still in operation, have mostly been battery electric powered for over 100 years, because electricity is a good choice for this application; a slow, short distance predictable journey with frequent stops and a need to keep the noise down. But ...