Okay, I was one of the lucky ones. I was in a windowless concrete building when the bomb went off, and I was far enough away to survive the shock wave and super-heated winds.
Even luckier, I am a fan of antique cars, and my 67 mustang hardtop was parked one floor down in the (also concrete enclosed) garage. Its' pre-computer-age ignition fired up on the first turn of the key and I'm now racing through empty streets, away from the detonation site within 3 minutes of the blast.
Assuming that building, vehicle choices, and clear roads have exhausted my positive karma supply, I glance in the rear view and confirm that yes, a mushroom cloud is rising into the sky behind me, and that the post-blast winds are returning to their natural course, gust-fully chasing me as I flee out of town.
Given a three minute head start, can the fallout of a 150 kiloton ground-level nuclear blast, terminally irradiate a person during the time it takes for a high speed muscle car to escape the initially contaminated radius? Assume that the person starts in the closest survivable concrete building and that the roads have been recently swept clean (but contaminated) by super heated nuclear winds.
Would the car's tires melt and burst during the first few miles of the escape?
Are there any other issues that I am overlooking, like "the car will overheat" or "the driver will be cooked long before the radiation kills him"?
Should the driver avoid future procreation activities in the years following his lucky survival?