Peter,
Thank you for referencing our website regarding the question of UL. I answer the UL question virtually every day and could write a book about the absurdities and politics surrounding the UL certification process.
As mentioned on our website, where an extinguisher is required by law or regulation anywhere in North America that device must be UL listed. In these environments our device can supplement but not replace the UL listed units. Most environments, however, are unregulated (your private vehicle is an example). In these settings you can use the device of your choosing without restriction.
Regarding CE, please note that this is a European certification, not a Canadian one. The Canadian testing body is CSA but they, like every other regulatory body in North America, revert to UL when writing their fire extinguisher standards.
Kind Regards,
Paul
