"Something about that comment made me think, bless their heart, and if I can do anything with this new-found success, if I could do anything at all, I could deliver on that wish.
"It's a strange and unique sense of gratification, and it's not like any film I've done in the last 10 years."
Riddick hits cinemas on September 6 and the star doesn't appear to have any money problems for the moment.
The Fast & Furious actor, who has made six films in the series, gave his daughter his favourite car when she turned one-year-old.
"For me, I like the red Chevelle. I gave it to my daughter," Vin told MTV.
His little girl, Hania Riley, was born in 2008 to his girlfriend, model Paloma Jimenez.
- Cover Media