In the last 2 weeks, as I have been driving, all of a sudden the car
has just shut off.  The first time it happened I just pulled over
stopped, engaged the started and the car started as if nothing had
happened.   It happened again today, the difference being that I was on
the highway.  The car shut off, the maintenance light came on, then
after about 1-2 seconds, the car gained electrical power again, and
everything was fine.
  I have noticed in the last few weeks that on occasion when I turn the
key to accessories to listen to the radio, nothing will happen until I
turn the key off and then on again.

Is it time to replace to ignition key, or should I be looking at
something else?

Thanks,
Steve
Saskatoon, Canada