The good news everyone wants to read
New Zinc-Air Battery Beats Lithium-Ion Battery on All Levels
The zinc-air battery offers significant cost savings
Sadly zinc-air batteries are very sensitive to low temperatures, humidity and pollution: high altitudes or cold and humid climates, such rain, reduce both maximum power and autonomy.
Also they can’t be recharged at home, or used in braking energy recovery, or connect them to a generator powered by an internal combustion engine, or recharge them with solar cells, etc.. (source: Italian entry of zinc-air batteries)