Staff at Toyota's assembly plant in Derbyshire are due to see the new model they will be making for the Japanese car firm.
The Auris Touring Sports is the first full hybrid estate vehicle in its class.
Production of the vehicle will secure jobs at the Burnaston plant for at least a decade.
It will also benefit many more companies who supply parts to Toyota.
The car is set to be unveiled in the next 10 minutes.
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Rain, occasionally heavy, will clear around midday, then sunny intervals will develop during the afternoon. A windy morning with gales.