The AMBR winner for 2018 is significant in a couple ways other than winning the trophy

it's the first 1931 to win the AMBR
the first time a car from HR&H has won
first for it's owner

I found it surprising to learn a 1931 Ford roadster has never won before

http://www.hotrod.com/articles/winners-2018-grand-national-roadster-show/#001-1931-ford-roadster-gnrs-jpg