Mack Trucks Inc. will debut another version of its Granite heavy-duty vocational truck at the 2005 World of Concrete show being held January 18 to 20 in Las Vegas.

This new model will retain all of the features of the current model but have more additions, company officials said. Customers who visit the Mack booth during the show will be able to test-drive the new truck.

Further details are “embargoed” until the formal product launch, the company said.