Bingley,

Like others I separate things. There is a tool kit (things for the car) in a tool bag. There is a 72 hour kit in a backpack. There is extra food and water in a small duffel bag that can be strapped on top of the 72 hour backpack, but is used at the car significantly more often. There is also my most used kit, a spare set of clothing, from the inside out, with toiletries for an overnight or when I get dirty or wet. It is in an old canvas breif case (except for the boots). If I needed to leave the car in a hurry, 15 seconds would have it together to leave. Most of the time I just need a bottle of water for someone who is dehydrated, a snack for someone who forgot breakfast or a clean shirt because I spilled my lunch.

Respectfully,

Jerry