I usually carry my cameras in the car trunk in a couple of modified roller tool boxes. One contains my Nikon with 28mm, 50, 85, and 135mm primes, in its own bag, a Mamiya TLR, pair of Holgas and various tools and gizmos as well as extra film for the outing. The other contains my Calumet 4x5 and Commercial View 8x10 and lenses, dark cloth, filters, loupe, spot meter and film holders. If nothing else, I will leave the LF stuff at home and take the nikon or holgas in the car always.