Can we see a pic?
Left bag: extra clothes, poncho/poncho liner - weighs about 10 pounds (shoulder strap is included in each side bag's outside pocket)
Right bag: FAK, tools, fire starting kit, cook set - weighs about 15 pounds
Center bag: remainder of BOB stuff, including food - weighs about 35 pounds
not shown: gallon of water in two 2-quart military canteens (with shoulder straps) - weighs 8 pounds
(as shown bags are attached on the sides, could be attached top and bottom if needed)
The entire kit could be carried all together a relatively short distance and then repacked as needed. Or divided among 2 or 3 people. Again, predominately a car BOB but packaged in such a way it can be transported if necessary. (Both of our primary vehicles have basically identical kits.)