Straight to You by David Moody-
The sun is dying. The temperature around the world is rising by the hour with no sign of any respite. At this rate the planet will soon become uninhabitable; all life extinguished. It might be weeks away, it might be days... we may only have hours remaining. Society is crumbling. The burning world is descending into chaos.
Steven Johnson's wife is hundreds of miles away and all that matters is reaching her before the end. He has to act now, no time to stop and think. Every second is precious. Tomorrow is too late.