I thought about the same thing just buying a new (to me) truck myself. I had planned on buying something like a leatherman crunch, but for the price of it I was able to buy several other tools. My plan now is to buy another Wave as a backup incase my EDC wave ever gets lost or broken. I have an extended cab truck with the fold up jump seats in the rear. Between the hinges of each of the jump seats I was able to place a small daypack (Eagle Creek Sidekick). The passenger side pack I filled up with a small screwdriver set, small wrench set, and some racheting wrenches, and a pair of pliers. I'm trying to avoid having a socket set and screwdrivers with the removable bits as they tend to be easily lost. I pull out my small tool bag when I do maintenance to make sure I can do most everything I need with just those tools. Behind the drivers seat the bag there will contain a duplicate of all my EDC gear so I have a handy replacement in the event of loss, damage, theft, etc. For example it will eventually carry a spare Wave and currently has a spare Maglite as well as spare batteries as well as some extra gear I want handy like a sewing kit, maps and compass, etc. Anyway to sum a long boring post, When I choose extras for a car kit/bob I buy a duplicate of my EDC, with my luck the day I do loose something will be the day I really need it.