I am sorry if you own a second generation Ford Explorer and decide to change the spark plugs yourself.
Ford engineers decided to tuck these contraptions of combustion all over the enginge bay of the vehicle.
Some of ’em were only accessible if you took the wheels off.
(Unless of course you have a special tool and worked at a shop).
Me? I spent the morning vaccuming bits of breakfast foods and beard hair out of my car interior.