Car Will Not Start problems of the 1997 Mitsubishi Galant

While driving on hwy with family at 65mph car lost electrical power. Came to a halt in real busy traffic. No lights including emergency flashers would turn on. Car would not start and stalled. Forced to vear off highway not to cause accident. Total cost of towing 155 dollars and total cost of repairs 900 dollars. Lucky we are still alive and no one else got hurt.