I dug through all of my tools today and consolidated them into "ride with the truck" and "stay at home". You need to be prepared to leave your old vehicle by the side of the road, and hitch on home, always. Hopefully you get back to get it, and sometimes you do, otherwise when you leave you carry everthing of value with you in a backpack.
Morning update: These are actually my emergency tools, most are not making it into the travel bag. And those cool hammers on the left are my grandfathers and I don't travel with those. I think I'll take the seatbelt cutter, the tool between the hammers and tripod, and that small prybar thing with it's head near my remote. Also, I don't carry when I travel.