I'll try a little math here.
V(i) = 600mph = (about) 270 meters/second.
V(o) = 0mph = 0km/s
D = distance of acceleration = 200 feet(62 meters)
equations: V^2(i) = V^2(o) + 2ad
a = (270 m/s)^2 /(2)62m.
a = (73,900 m^s/s^s / 124m
a = 590 m/s^s = 60-gees.
Phil's got the general idea! At 60-gees, the poor guy might die, or go permanently blind [burst blood vessels in the eyes]!
Jacob