I'm often driving bush tracks & other off-road areas, I have found it necessary to carry my saw as I've been caught out when I didn't have it.
Not much room on the back of the work vechile so made a couple of brackets to mount the saw on.
It has a cable/padlock attached for security but have never had any problem in this regard.
Because the CS is old & doesn't owe me anything I just leave it there all the time now, it picks up a lot of dust (gravel roads) but that comes off when the ute gets a pressure clean.
Though I reckon when I get the new 395XP it'll stay home in the garage!!
I also carry the alaskan mill there as well, (now I just need to find room for the ladder guide

)
Only took this pic a couple of days ago when checking out blackberry I've been working on.
Cheers.