The widow of an Ancaster, Ont., father who was murdered after taking two men for a test drive of a truck is enraged she lost her husband over a vehicle.

In a highly emotional interview with CHCH News, Sharlene Bosma said she doesn't understand why her husband was killed.

"It doesn't make sense. And that's what makes it so much harder, because there's no reason. There is no reason," she told the Hamilton, Ont., television station on Friday.

Tim Bosma never returned home after taking a pair of prospective buyers for a test drive May 6 of a pickup he was trying to sell online.

'It makes me angry. And I don't understand.' —Sharlene Bosma, on her husband Tim's death

His remains were found about a week later burned beyond recognition at a southwestern Ontario farm belonging to one of two men charged with first-degree murder in his death.

Sharlene Bosma said all she was able to bury were the remains of her husband contained in a small box.

"I didn't have a hand to hold one more time. I didn't get to touch his cheek one more time. I held a box. A box!" she said through tears.

"And for what? For a truck? Because that's all it was. It was just a truck! So we said goodbye to a box."

The mother of a two-year-old said the way she was forced to say goodbye to her husband fills her with rage, particularly when she considers her nightmare began with a truck that wasn't even "a good one."

"In 18 months I think we spent over $10,000 in repairs. It was a lemon!" she said. "It makes me angry. And I don't understand."

Court case

Dellen Millard and Mark Smich have been charged with first-degree murder in Tim Bosma's death, and both plan to plead not guilty.

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Tim Bosma was last seen on May 6. (Supplied)

Police have said Millard and Smich know each other but wouldn't say how.

Millard, who owned the farm where Bosma's remains were found, is also charged with forcible confinement and theft of a vehicle in relation to Bosma's death.

Police believe Bosma was killed the same night he went missing, though they haven't yet said if he was killed in the truck, on the farm where his remains were found, or elsewhere.

As many as 120 investigators worked on the case, executing more than 15 search warrants and production orders and following up on more than 700 tips.

Both Millard and Smich are set to next appear in court via video on Aug. 1.