That's interesting, I got the opposite impression from this site:
http://www.chrishodgetrucks.co.uk/ (Truckfests & Shows link)
There's some.. questionable taste, but all the trucks look very well cared for.
I suppose that's what you get at a truck show, but given how many there are it seems there's a lot of enthusiasts.
And they have truck trials and circut racing in europe, how cool is that?