Until recently, I used a hard-sided, wheeled travel briefcase to haul all my cables, mics and my 101b footswitch when it wasn't mounted to my pedalboard. Something like this...
https://express.google.com/u/0/product/ ... =118724597
Now I put it in one of the pockets of my Line6 Helix backpack. The top pocket on it is the perfect size for the switch and cable.
https://www.sweetwater.com/store/detail ... x-backpack
They're built like tanks. I had the same one since the late 90s that I just replaced last year. If you have to throw it in the trunk, I wouldn't worry about it.