I have a Marz Tactical Patrol IFAK strapped to the headrest of each seat in my truck. I each Patrol IFAK is a SOFT-Wide TQ, a TacMed Solutions Olaes pressurebandage, a HALO chest seal, a Sharpie, a small amount of duct tape, and a pair of nitrils gloves. I have a disposable CPR mask clipped to each IFAK.
I have an old NARP squad medic thigh rig in the truck with is loaded with Kerlix, Coban, Ace bandages, and Water Jel. It serves the purpose as "Hey I need more bandages" or "That isnt bad enough an injury to use pressure bandages". I'm thinking about removing some Kerlix and adding an Olaes Blast Bandage.
I have 40 hours of training over the last 2 year in field and tactical medicine, so I am confident in the use of those tools. I am NOT confident in using needles, but will eventually carry them for others to use.