MILTON, Wis. -- The production line at the Janesville General Motors plant is beginning to wind down.

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The final SUV will pass through the GM Assembly Plant on Tuesday morning. Departments that have already done their part in building the final vehicle are now cleaning up, taking inventory and making other preparations for decommissioning the plant, WISC-TV reported.

The final Chevrolet Tahoe will roll off the line around 6:30 a.m. on Tuesday, officials.

Employees will be able to sign a banner and take photos with the SUV before saying goodbye to the plant.

GM's history in Janesville goes far beyond the walls of the plant to the thousands of workers who have built vehicles over the years.

In 1985, Jim Glass, of Milton, became the third generation of his family to build cars at the GM plant. His first supervisor was his father, Tom.

"Jimmy started right up in the paint shop," said Tom Glass. "I didn't even know he was coming to work. He never told me. I'm sitting up there and one of the guys said, 'Hey, isn't that your son over there?' And I said, 'Huh?'"

"They just shipped me up there for the day, "said Jim Glass. "It was kind of a surprise for him. They put me on one of the worst jobs so there was no favoritism."

As long as GM has produced vehicles in Janesville, the Glass family has been a part of it.

"The whole family is involved in building cars," said Tom Glass. "That's all we've ever done since my dad back in 1923. I guess it's just in our blood."

Tom's father was Harold "Curly" Glass, one of GM's first hires in Janesville -- thus started the proud tradition in the family.

"It was a great way to make a living," said Jim Glass. "We were good at it. But we worked hard for it also, you know."

Jim Glass is disappointed the next generation, his 9-year-old daughters, won't have the same opportunity. But, he said he hasn't given up hope.

"That's what we've always done," said Jim Glass. "We've always done it proud. We've always done it good. We're just asking for another chance to keep building great vehicles -- no matter what they may be."

On Tuesday morning, Jim Glass will leave the Janesville plant with an uncertain future. He said he's not quite sure what he'll do.

He and his father said that they're hoping that local and state leaders will work with GM to eventually bring a new product to the line.