Because, needing a jump in the middle of the woods is the worst; and because forest service roads are not covered by AAA (page 15, AAA Handbook). We present to you, the DBPOWER Portable Jump Starter!
This thing is great! The 600A peak power model pictured above will easily start a large vehicle dozens of times. It comes with barrel adapters to safely power laptops and other digital devices (Sorry, no MacBook adapters included) and includes USB ports to power smaller devices. An additional adapter can be purchased for cigarette lighter output; handy for air-pumps and other appliances.