With two stacks of block paving side by side the whole length of the trailer, single strap over each pair, I'd think it must have been sitting at 40 or 44 tonnes altogether... As I followed it I was trying to comprehend the physics of that mass at nearly a ton up! if anything had gone wrong like a trye burst it would have been carnage for probably half a mile!
An arctic travelling 90 mph?? surely the tyres would burst with the road resistance.