Nothing should be in your trunk. No tools, no jack, no spare tire (tyre for the Brits), maybe a can of fix-a-flat for a slow leak. You could take a credit card from your wallet and put it in the trunk. Alfa dies? Call a tow truck or AAA. All else is extra weight and slowness . . . else it is a never ending saga of putting more and more in the trunk "just in case."