living fairly remotely, we carry more in our vehicles than we'd likely need.

its diverse gear to cover as many situations as possible (wet/dry, summer/winter, long/short-term, safe/violent, healthy/injuried, etc) but we do so using a layered technique (a modification of rowe's first-second-last-line kit concept) of having the most important things always on the body or in pockets, then belt/coat-pocket items, then small pouchs, then vests, then packs, then vehicle-only gear/tools.

if not used in place, depending on the need, the necessary equipment likely to be needed can be chosen and carried away very quickly. and if its later discovered that too much has been taken (due to distance/speed of foot travel), less important items can be pitched/hidden.

knowledge and flexibility is the key.