Teiars = tires Batris = batteries egsosts = automobile exhaust components sciocs = shocks sustained by owners of property destroyed by floods. Perhaps maverick is a dedicated environmentalist, depressed by trashed beaches and flooded homes. The words were in Welsh.
I saw these emblazoned on the side of a tyre/tire truck, and it struck me as a fine example of loan words getting the makeover in a local pattern of fonetigs - ah, sorry, phonetics
edit siocs is actually referring to shocks, or shock absorbers (in longhand)