Vehicles made in the Midlands are leading the way in global sales.
The region is making far more cars this year than it did last but that figure could be even higher if smaller firms, who keep the big manufacturers going, could expand.
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West Midlands Police said the trip was to show children they shouldn't be scared after the recent terror attacks in London and Manchester.
Bright or sunny intervals and a chance of isolated heavy showers until mid afternoon, when the showers will become more widespread.
Showers and longer spells of rain are likely throughout the day, though there will be some dry and bright spells too.