I just bought a new Toyota Camry 2011. I have asked for the model with LEAST e-gadgets, and only added a pair of fog lights. That's it.

Th trunk has three ways of opening, remote control, latch inside the car (beside the driver seat), or using the KEY.

I believe that a prepper should NOT hand-cuff himself by buying electronically loaded vehicle, unless there are manual alternatives.

Since the OP main question is about the kit, I think he can either put it nearer to him as he drive, or add another smaller kit on his person as he drives.

Newer cars have bigger space for personal stuff ( e.g. bigger glove compartment ) . It can easily accomodate a Maxped pocket organizer or two.

Edited to add :

Forgot to say that the new car came with a nice emergency kit ( compressor, FAK, gloves, emergency light, reflective triangle, & fire extinguisher ) .. but no jumper cable