I had a strange episode and do not remember anything of that moment. What should I do?

Hi doctor,

I had a strange episode the other day where I was driving, and it was like I lost and had been in a trance or asleep. When I snapped out of it, I was not sure where I was. I thought I was lost at first and did not recognize anything, although I take this trip daily. I had not been sleepy, deep in thought or stressed or anything. I got to work finally. I do not remember anything which has to be done in office on that day. I was told I had said something to someone and had no recollection of it happening and causing a bad argument. I had an appointment with a neurologist today, because of other symptoms. I told him about it, and he said let us see if it happens again. I work in a maximum security male prison with inmates around me for 8 hours. The driving thing scared the crap out. With my job, I cannot risk that happening again without being on a path to figuring out what caused it. What would or should I do? I am not terrified there is something wrong with me, but I am scared of that happening again.