Q: I drove my car, the car wouldnt turn off, and then when I got it to turn off it won't turn on. The dashboard lights come on but wo

I drove my car in the morning to pick up a coworker, and my car wouldn't shut off because I had to leave work. When I got home, it wouldn't shut off I asked my husband, and he couldn't get it either so he finnally got it off, and now it won't turn on.. the lights come on but won't start at all. Could it be a misfire? It's in the shop now but he said it's a cylender.
My car has an automatic transmission.