As noted a bit earlier in this thread, repurposing #ParkingLots (adding #solar) can be a highly effective and ultimately cost-efficient way to reduce overall #emissions and mitigate #ClimateChange.
Another, maybe more mid-term option could be to enhance the amount of #greenery in such lots, or to use greenery instead of or along with solar.
All combined with improved #transit, public and personal, for an Everything, Everywhere, All at Once approach.