How about..
On the way to the construction site, the two guys bringing the truck get the first load of lumber while leaving one of the two at the lumber place. Then when the truck gets to the construction site, another person gets in the truck while the 5 get to work. The guy at the lumver yard will be preparing the next batch of lumber, while the truck is on its way. When the truck gets there, the two people both pack the truck, but the person who drove it there, stays to prepare the next batch of lumber. The person who prepared the lumber they put into the truck, drives it to the site. Then when he gets to the site, he gets to work there, while a different person drives the truck back to the lumber yard. The guy at the lumver yard will be preparing the next batch of lumber, while the truck is on its way. When the truck gets there, the two people both pack the truck, but the person who drove it there, stays to prepare the next batch of lumber. The person who prepared the lumber they put into the truck, drives it to the site. Then when he gets to the site, he gets to work there, while a different person drives the truck back to the lumber yard. On the way to the construction site, the two guys bringing the truck get the first load of lumber while leaving one of the two at the lumber place. Then when the truck gets to the construction site, another person gets in the truck while the 5 get to work. The guy at the lumver yard will be preparing the next batch of lumber, while the truck is on its way. When the truck gets there, the two people both pack the truck, but the person who drove it there, stays to prepare the next batch of lumber. The person who prepared the lumber they put into the truck, drives it to the site. Then when he gets to the site, he gets to work there, while a different person drives the truck back to the lumber yard. The guy at the lumver yard will be preparing the next batch of lumber, while the truck is on its way. When the truck gets there, the two people both pack the truck, but the person who drove it there, stays to prepare the next batch of lumber. The person who prepared the lumber they put into the truck, drives it to the site. Then when he gets to the site, he gets to work there, while a different person drives the truck back to the lumber yard.
And so on a so forth XD
