Team Car Wash manager Jason Greig said the team believed it had the trolley to win the $10,000 prize purse at the Trolley Grand Prix at the Auckland Domain on November 10.
Other members of the team are Richard Cathro, Guillaume Leclancher, Paul Wrigley and Matt Canaday.
The team had entered the three previous grand prix events but were building a sleeker trolley.
''This time round we have taken our old trolley and upgraded it.
"We've built a whole new chassis and redesigned the suspension and steering and built a really awesome body shell to make it look even better,'' Mr Greig said.
At the last grand prix, their trolley's average speed on the 750m track was 14.5m a second (52.2kmh).
''And this time we are picking it could be a couple of seconds faster.''
Although they were the quickest that day, the competition was judged in three parts - the race time, overall team creativity and a 30-second pre-race show performance.
''This time, as well as having a quick trolley, we're hoping to have all the other parts combine and take it all out. Our theme is a 1970s car wash, so you'll see a lot of afros and horrible coloured shirts.''
During the performance, the trolley would roll into a car wash as a ''big dirty ol' Cadillac'' and would come out as a ''true race car''.
The trolley had taken about 1000 man hours to build and the team had ''begged, borrowed and pleaded'' for building gear, he said.
The all-male team were looking for sponsors and female supporters, he said.
''If any girls want to join us and get in their bikinis that would be fantastic.''
The first test run was planned for this weekend and then the fine-tuning for maximum speed would begin.
''We do it for the love of it and we love going fast,'' he said.
Another Dunedin entry in the GP is ''Team Captain Cook Bus''.
Team members Zac Gawn, Ruby Sycamore-Smith, Karl Douglas, Greg Redai and Logan Edgar will enter a trolley with a Captain Cook Bus body shell.
