Brake fluid would be a good idea since they don't carry ours anywhere near Fontana. Jason was looking a few years back and this was an issue.

I carry a general bail out bag in my car. Jumper cables, sensor safe (ha ha) fix a flat x 2, zip ties, duct tape, gloves, signaling device, flashlight, safely triangle, tools, travel blanket, etc. All that fits under the top in the roadster in a nice case. I will have to remember to switch it to the SRT for the Dragon.