Hi All
Lorries of this period were taxed on there unladen weight which went agaist sleeper cabs & many more lorries were trunked day & night with drivers having days out in B&B thus utilising the invesment.
Volvo were a player in sleeper cabs being more common place because when ordering a stasndard cab on all other makes this was a day cab but on a Volvo it was a sleeper.
If you go to talk to any drivers on a night out now they dont speak english anyway
Cheers
Rich