I think it means that in his 36 hour drive, he has time to think about all that is happening, and he realizes that his relationship with that person really isnt what he wanted. "What you wish for won't come true.
Live with that." He realizes that his wish (for a perfect long relationship) will not come true, and his hopes for that "fall out from my hands back to the ground." The drive has allowed "The haze to clear from his eyes on a Sunday." And he is going to act on his thoughts soon enough.
I think it means that in his 36 hour drive, he has time to think about all that is happening, and he realizes that his relationship with that person really isnt what he wanted. "What you wish for won't come true. Live with that." He realizes that his wish (for a perfect long relationship) will not come true, and his hopes for that "fall out from my hands back to the ground." The drive has allowed "The haze to clear from his eyes on a Sunday." And he is going to act on his thoughts soon enough.