THE world's biggest private collection of classic Vauxhalls is to throw its doors open to the public for one day only, and for 2008 will also be celebrating ten million Astra sales since the model first appeared in 1980.

This year, the Vauxhall Heritage Centre's annual open day, run to coincide with the Luton Festival of Transport, will mark the history of its best seller. A range of Astras will be on display dating back to the MK1, including specials such as the 4S rally car, pictured, and an ex-BTCC racer. The day will also make a feature of the car's predecessors - the Chevette and the Viva, both of which were built at the current Astra's home - GM's Ellesmere Port factory.

Based at the Heritage Centre in Park Street, Luton, the event takes place on Sunday, June 8, with free entry, and while the Astra will take centre stage, visitors can also view the company's 50-plus strong collection of classics.

From the very first 1903 Vauxhall through to modern' classics such as the last Monaro, the Heritage Collection contains more than a century's worth of classic Vauxhall models, including favourites such as the Lotus Carlton, the racy VXR 220, and the latest addition to the fleet, a 1975 Vauxhall HP Firenza Droop Snoot' awaiting light restoration.

There will also be entertainment for all the family, including a BTCC racing simulator plus children's activities. The open day will run from 10am to 5pm and a free bus service will run throughout the day between the Vauxhall Heritage Centre and the Luton Festival of Transport at Stockwood Park for those who want a classic transport themed day out.