Why Monster Truck Rallies are not popular in Britain

In almost six months here, I have not seen one ad for a monster truck rally.
Discuss:

Hypothesis 1:  Fuel is very expensive here, about $8 per gallon.  Sports that waste fuel are not economically feasible.

Contradiction:  Motor sports are much more popular here than in the US (the exception being NASCAR, which is understandable because rednecks turning left for eight hours is not a sport).  They have motorcycle races in places called "The Isle of Man" (sounds like a euphemism for a bald spot), and car rallies that last longer than cricket matches.

Hypothesis 2:  In Britain, trucks are called "lorries", and "monster lorry" just doesn't sound exciting.

Contradiction:  Pass

Hypothesis 3:  TV and radio ads for monster truck rallies require a voiceover track that Brits just can't pull off.

American version:  " Race Fans!! (race fans....race fans....race fans).  This Friday at the COOOOWWW PALACE, the BIGGGGGESSST monster truck show since last month!!!!  See BIGFOOOOOT jump 20 VW beetles!  See Graaaaavedigerrrr destroy a 1967 Chevy Impala!!!  If it's too LOOOOUD, you're too OOOOLD!!!!! (discount tickets available at your local Safeway)"

UK version:  "Motor sporting enthusiasts!  If your diary is not otherwise booked, we invite you to the Princess of Wales Family Fun Centre in Wembley Crossing for a lorry fayre!  See elaborately-decorated lorries with comical names overcome large pointless obstacles!  Watch them spew jets of flaming gas, and emit sparks in copious quantities!  Persons with acute hearing are cautioned."