Re: "Trump wagons"
The Reg being a British publication, here "Trump" is in fact nothing to do with US politics, but is in fact a humorous reference to breaking wind audibly, as typified by it's use in the Beano, an amusing publication for children: E.g. (soz for fb link, but the url is self-explanatory) [1]
https://www.facebook.com/BeanoOfficial/photos/trump-verb-informal-to-break-wind-audibly/10155885157988554
I believe the conceptual link is between farting ("trump") and the larger tailpipe emissions of an SUV ("wagon").
HTH
:-)
[1] For those too privacy conscious to ever visit facebook, it's a picture of Gnasher, Dennis the Menace's dog. (No, not that other leftpondian "Dennis the Menace", the proper one from the Beano)
Biting the hand that feeds IT
