The Gnoo Blas Classic Car Show and Circuit Tours attracted its largest crowd yet, with organisers estimating attendance of about 2000 people and 400 entrants.

One highlight of the day was a demonstration by the University of NSW Solar Race Car, Jaycar Sunswift III.

Electrical engineering student Andrew Wrigley said the team had jumped at the chance to throw a few laps of Gnoo Blas in their record breaking solar vehicle.

“We did about five laps around the circuit. The organiser contacted us and wanted to find out if we'd be in it, so we thought we'd come and check out the classic cars and give people a chance to see our car,” he said.

Jaycar Sunswift III has a top speed of about 120 kilometres per hour and an average speed of 90 kilometres per hour, and holds the world record for the fastest solar powered crossing of Australia.

Mr Wrigley said solar powered vehicles were becoming more of a possibility as the technology developed.

“Cars that are solar-powered alone might not be totally practical, but something hybrid is definitely a possibility. At the moment we're designing cars to race 3000 kilometres, but realistically most people are driving short distances. People need to think about what they actually need in the way of a car,” he said.

A Classic Enthusiasts dinner was also held at Orange City Bowling Club on Saturday night, with guest speaker Sue Evans entertaining the sell-out crowd.

The Australian Rally Champion co-driver, who co-drives with her husband Simon, said she had enjoyed a weekend in Orange at a slower pace than usual.

“I had no idea exactly what I was coming to, and it was fantastic. They're a great bunch of people. It's different to what I would normally do but sometimes you need to just stop and smell the roses,” she said.