Some caches may be in remote lands and you need a 4WD to drive to
it, (hiking is possible, but the hike may be long), but most of us do not
consider a 4WD vehicle to be special equipment, either.
I
don't believe that a bicycle is special equipment. Bicycles are pretty common
and most people know how to ride them. It's not like scuba diving equipment or
rock climbing equipment, which require training and knowledge to use.
If you don't consider a 4WD or mountain bike as
special equipment, then please note the need to use it on the cache page.
Those of us who don't have either of those, like us, would appreciate knowing
this in advance. Some of you already do note this, and we appreciate it very
much.