hi Dan,
glad to hear of your weight gain.
during my rad/chemo i walked 1 block to the hospital... normally was almost asleep in the waiting room... had rad, went home and slept the rest of the morning.
so i am concerned about your driving and think that you should really pay attention to how *you* feel... this is a good time to reach out and let folks help if you need it.
on the otherhand, i know a fellow who worked part time during his rad...
so things vary.... this is a good time for you to really pay attention and be safe.
good luck,
larryb