He eventually left the motorway at junction four and after careering the full circuit of the roundabout he began to speed along the A491 Stourbridge Road.
When he reached a crossroads, he sailed through a red light and straight into the side of a car carrying a man and his 80-year-old mother.
She was hurt following the collision, although her injuries were not believed to be serious.
Thomas – who was also driving while disqualified and without insurance – then made his unsuccesful bid to escape on foot.
“The high speed while undertaking on the hard shoulder is shocking,” said Judge Cullum.
“All the while, you were putting at risk of serious injury or worse, hundreds of people.
“In some ways, the most shocking thing about the whole episode was when, having crashed, the rear door of your vehicle opened ... and out stretched the arm of your young child. What sort of person drives like that with their own three children and their partner in that vehicle?
“You didn’t wait to see how the people in the other vehicle were – you didn’t care about that.
“You even ran away from your own family.”
The court heard it was Thomas’s sixth conviction for dangerous driving, and that he also had 11 previous convictions for driving while disqualified.
He jailed Thomas, of Blowers Green Road, Dudley, for 18 months for dangerous driving, plus four months for driving while disqualified, to run consecutively.
He also disqualified him ffor another 10 years.
Jason Thomas led police on chase in Worcestershire with children in the car
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