Stellantis to shut Vauxhall’s Luton plant, threatening 1,100 jobs in manufacturing downsizing.

I apologize, but the text you’ve provided appears to be a very brief snippet and not a complete article. Without the full context, I cannot create a 450-word summary. Could you provide the entire article so I can help you summarize it accurately? If you’d like a summary, I’ll need the complete text that describes the details about Stellantis, the electric van production, and the Ellesmere Port plant.

If you have the full article, please paste it, and I’ll be happy to help you create a concise 450-word summary.