Sol Survivors. Sol Survivors, #1

Less than two days. That's all the notice America gets of a fast-approaching solar storm so unprecedented in scale it sets the geomagnetic scientists in a panic. Many citizens don't have the resources, or even the concern, to take preparatory measures for the overhyped-sounding warnings that life as they know it is about to be over. Joel McConnell, a self-made Washington DC businessman and survival hobbyist, is not one of those.
But bugging out with his culture-loving girlfriend before the solar flare hits proves to be a too much of a challenge on such short notice. With the power grid suddenly destroyed, most modern electronics fried, and cities quickly descending into utter turmoil, they find the 500-mile journey to Joel's well-stocked rural retreat a maze littered with opportunistic criminals and increasing hostility. That isn't all.
It soon becomes evident the sun storm did more than plunge the western world into darkness and civil unrest. It left something equally sinister behind. Something that feeds the human compulsion for disunity to such extremes it makes the recent political divisiveness in America look like harmonic brotherhood by comparison. With the effects worsening daily, Joel learns the highway is but one treacherous adversary he must defeat.
Others can sprout where you least expect them.