The Dunlop family.
They've given all to racing in many ways. They have paid the highest price and still won't give up. Joey was the best known, but Robert was amazing in that he was able to come back from serious injuries to compete - and win - again. Sheer determination and fearlessness.
The movie "Road" tells their story.
http://www.huffingtonpost.co.uk/2014...n_5492592.html
Trailer -
Link to original page on YouTube.
https://en.wikipedia.org/wiki/Robert_Dunlop
EDIT: Just found out another reason that Robert was so amazing - we share the same birthday (though he was 3 yrs older).