I'm Thunderstruck!

I first encountered this on Facebook a year or two ago and was duly impressed by it but also proceeded to forget about it. I saw it again on Facebook the other day and won't neglect to share it here this time. This remarkable Finnish redneck ensemble (Steve 'n' Seagulls) does a cover of ACDC's "Thunderstruck" and they nail it. Who knew? Another question: are they indeed imitating American redneck tradition or is that typical costumery of Finnish yocals?