You were drving down the road in your 1990 toyato Camry and it went dead on me what happened?

That could be a few different things. First thing I would check is the timing belt. Get a spark tester from your local parts place and see if you have spark to the plugs. if not, get the distributor cap off and have someone try to start the car while you watch the rotor. If it doesn't spin it most likely means that your timing belt broke.