I’ve had someone tell me off for leaving my car running while I was doing deliveries. I didn’t hear her properly so went over closer to her so she could repeat herself . Took longer for her to moan about it than the actual parcel delivery, so ironically she ended up making me leave my car running for longer than necessary rather than making me stop it.
I explained that if I stopped and started my car each time I delivered something (could be up to 20 drops a day) my car would be absolutely knackered within a year and I’d cause a damn sight more damage to the planet having to get a new engine than the extra 10-15 minutes of exhaust fumes from keeping it running each day would do.
If I have to walk more than a few metres to the front door I switch it off and lock it up anyway, it’s only when I literally nip out, drop the parcel and leave, so maybe half the time.
My DP will leave his air con on while he’s on a business call in the car. I do find it a bit unnecessary but on a hot day while parked up he’d need the windows open at least, which means no privacy on his calls and it would mean starting the car back up again to close the windows at the end of the call, so again, more emissions and wear to the car. I don’t know how that compares to an engine idling but I’m sure that - in the grand scheme of pollution in this world - it doesn’t make a huge difference.
I remember Sean Locke talking about recycling. He said he was at home washing out his little Marmite pot then he went to America and saw the scale of the waste there and said he realised his little recycling efforts are like taking a dustpan and brush to a hurricane site and asking if there’s anything you can do to help!
Some people need to get a grip. Big corporations and indeed whole nations are the problem here, not individuals leaving their car running for a few minutes or not washing out their baked bean cans.