Ditch the Parking Lot
Don't panic, man. Green hospital architects like Messervy don't mean to say you won't have a place to park. But think about it -- if everybody drove all alone in their cars to park on a vast expanse of hot, black asphalt, what would that do to the average global temperatures? Oh, wait. I think we're finding that out.
We can't turn back time, but we can hand out bus passes. If the hospital is sited appropriately, then the architects probably took into account the local public transport system, like buses, subways, trains, trolleys and bike lanes, whatever. And while you, fingers crossed, only have to drive yourself to the hospital a couple times a year, employees have to show up for work every day.
Getting rid of the employee lot and handing out the monthly passes means no more watching squirrels hot-foot it across the tarmac, but that's a small price to pay to have squirrels to watch at all. Besides, you know they'll do something else funny, like eat a cheese doodle, in a minute anyway.