ANNA and Guido Mirabilio will travel 3500 kilometres across some of Australia's harshest terrain in a car that cost them just $306.
While the thought of breaking down along the way is making the Fairfield West retirees nervous, they reckon it will be the adventure of a lifetime.
They can hardly wait until May, when they set off on the challenge.
They will be taking part in the Cancer Council's Shitbox Rally from Adelaide to Fremantle via Uluru.
The event, colourfully named because the cars must be worth $1000 or less, will see 200 teams take part.
"My husband and I love camping as well as raising funds for a good cause, which is why we are so excited about this," Mrs Mirabilio said.
"It is also going to be very rewarding.
"We recently received a call from kids in Horsley Park and they made a $500 donation. I just cried when I heard that."
Before the pair can embark on May 4, they must raise $4000 for the Cancer Council to be eligible to enter.
They have $1700 so far but hope they will soon be much closer to their target. The couple have written 47 letters to local businesses seeking donations.
"For everyone who donates, we will offer them a sticker where they can write the name of a loved one that passed away from cancer and we will stick it on the car," Mrs Mirabilio said.
"We will also stick a photo of that person on the car, too."
Now in its fourth year, the rally has raised $1.7 million for the Cancer Council, and organisers hope to top $3 million after this year's rally.
To make a donation to Anna and Guido Mirabilio, call 0418 604 193.