And you could reach 1 million $ on those 10 mins, just had to put a bomb car south to the start point, get the orange guys to follow you, get inside the car, trigger the bomb and wait for detonation inside the car.
Additionally, you could go under the fences if you parked a heavy vehicle next to them and crawled below it.
Don't forget walking below the city entering the spot where the water was solid on northwest pier.
And finally, if you left the train in the precise spot, you could exit the train on top of the (eletrified) tracks and would not die.
It's fascinating how often it is really the tension against the unintended boundaries of virtual worlds that's the thing we remember most.