[rabbitc]

you can only do this by violating the terrorism blockade at the beginning when the islands are still locked - there is a great video on XBL Insider that shows you where to go: drive to the algonquin bridge (underneath it) and point your car towards it - you'll see a hidden ramp into a sheltered path that eventually takes you to a tunnel - camp there as long as you can (keep the car close) and once you're spotted, drive like f***.