Spyderidol:
ISUK:

I think the design of the particulate filter needs some work smiley

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I think that is the camping version. Portable barbecue is now an option. 

Apparently the portable BBQ may also function as a Portable Emissions Measurement System (PEMS) for measuring Real Driving Emissions...

Link:   https://www.avl.com/vehicle-system/-/asset_publisher/gYjUpY19vEA8/content/avl-m-o-v-e-real-driving-emission-testing

Smiley