Mack Trucks has produced a pretty neat video of a recent project in which three of its heavy-haul Titan models were the stars.

The project, three years in the planning stage, tells the story of Perkins Specialized Transportation of Northfield, Minn., being contracted to transport 800,000-lb decommissioned steam generator vessels from the San Onofre Nuclear Generating Station on the coast near San Clemente 800 mi to a Clive, Utah disposal site. The job was so massive that it required three Titans in total – one in front of the nearly 300-ft-long custom trailer and a pair of Titans behind the trailer. The whole package weighed in at 1.5-million lbs, said to be the largest and heaviest vehicle to travel on California roads.

There were four trips in all, starting in mid-August last year and ending in December. Each trip took 21 days and the vehicle’s speed ranged from 15 mph to 25 mph. Since the vehicle’s turn ratio was not very tight, crews and police escorts had to survey every intersection to ensure passage. The vehicle was 20 ft tall and was as wide as a two-lane road.

San Onofre is in the midst of a $280-million turbine upgrading project. Southern California Edison is the owner of the plant.

Anyway, take a look at the video here. It’s a bit promotional, but the end result is truly impressive.