The mighty M100SX is the biggest bulldog that Mack Trucks ever built. Only three examples were made in the 1960s, and just one still exists today. It was acquired by The Mahan Collection Foundation in New Jersey a couple of years ago, and I wrote a detailed story about the giant’s new shot at life after more than five decades. Now, the truck’s restoration is nearly complete, and it’s driving under its own power again thanks to the 1,788-cubic-inch diesel engine under the hood. If you want the comprehensive backstory on the Mack—right down to its original build schematics and spec sheet—be sure to check out my write-up from 2024.…
World’s Largest Mack Truck Is Driving Again After Major Restoration
