Cars will include classic Holdens, Fords, Jaguars and a wide range of marques from vintage and veteran club members. The display is part of the National Trust's month-long Tasmanian Heritage Festival, for which this year's theme is Journeys.

Ms Newman is not only a volunteer at Clarendon House, but a member of the EH Holden Club and will be there with the trophy-winning sedan she has owned for nine years.

``It's on `Special Interest' registration, which means I can drive it no more than 52 times a year and I mainly use it to go to car shows,'' Ms Newman said.

National Trust events and special promotions manager Hilary Keeley said  Sunday's event would run from 10am-2pm and include PCYC children's activities from 11am-1pm, including Taiko drumming.

``There will also be food and wine stalls, cider, live music and entertainment, so it will be a great family event, with kids under 16 admitted free,'' Ms Keeley said.

``I imagine we'll have at least a couple of hundred cars, but as well as all the car clubs and owners present, the National Automobile Museum of Tasmania will have a presence, as will the Tasmanian Horse Drawn Vehicle Federation with its display of carriages and demonstration of working horses.''

Ms Keeley said that the event would be held ``come rain, hail or shine''.

All profits from Sunday's event will go towards the cost of a roof restoration for Clarendon, which Ms Keeley said would cost ``a lot''.

FACT FILE

WHAT: Classic Cars at Clarendon.

WHERE: Clarendon House, Nile Road.

WHEN: Sunday, 10am-2pm.

WHY: Part of the National Trust Tasmanian Heritage Festival.

HOW MUCH: Adults $5, children under 16 free.