In the late 30′s, lorry company Jensen teamed up with tube maker Reynolds to create some light

In the late 30′s, lorry company Jensen teamed up with tube maker Reynolds to create some lightweight trucks. At the time the speed limit was 20mph for vehicles over 3 tons. Carrying light aircraft components, these vehicules made an appreciated increase in terms of productivity, allowing the truck to achieve almost twice more deliveries a day!

The picture was taken here, while more info was found there