The Longest Ride with Scott Eastwood

http://www.deadline.com/2014/04/scott-eastwood-longest-ride-nicholas-sparks-movie/

This is good news. I'm excited about this. And what's not to love? Clint Eastwood's son who is the spitting image of his dad.   

Sounds interesting but I'm confused as to what role he will play ?

"tracks a 91-year-old man trapped in a car crash who reflects on his life with his deceased wife as a young couple fall in love a few miles away."......the young man falling in love I presume, but what does the 91 year old man have to do with it ?. Guess I'd have to read the book...