All funds raised at the event went to supporting the rescue helicopter.
Morris told the Herald her brother had died in the rescue helicopter about 20 years ago after having a heart attack at just 45 years of age.
It is something Morris said she still did not talk about a lot, because it was hard to find the words.
Although her personal connection inspired her to give back, she said she was fortunate she had the right people around her who also believed in the cause.
"I have an amazing committee that I work with, we all have that same passion," Morris said.
"It started of as a one-day event and now it's a whole weekend - so it's grown every year.
"Now it's quite a mammoth event. We've created a giant."
Bennett said hot rod enthusiasts travelled hundreds of kilometres to be a part of the action and loved the atmosphere and ambience of the Orewa beachfront.
"People are quite happy it is going to a good cause," Bennett said.
Tonight's big event was a drive-in movie showing of The Blues Brothers.
"Tomorrow, we take over the whole beachfront and probably 500 or 600 cars, a stage, bands, rock and roll dancers, an auction - we have had some very generous sponsors," Bennett said.
"Sunday is another event again ... where we block off the main street of Orewa and fill up the whole town with cars.
"So that all the retailers get a slice of the pie as well, every cafe is full, every motel is full - obviously the petrol station loves us."
The full event line-up can be seen here.
