The kids were "getting rambunctious" on the drive home and Gunn said he pulled off to buy corn dogs and pizza pockets at a deli he liked in the little community of Merlin.
"I just kind of figured this was the kind of place you read about winning the lottery," he said. "It's a small town and you never know."
They deposited the $670,000 — their winnings after taxes — in a bank, then wrote a check for 10 percent of that amount as their regular tithe payment to their church.
"You give back to God what he is giving to you," Gunn said.
Then they went to a car lot and bought a pair of brand new Jeeps — a Grand Cherokee for her, a Rubicon for him.
"It was overwhelming to go to a car lot and be able to pick a car, any car, that you wanted," Misti Gunn said.
They also bid on a house in Redding, Calif., where they lived before Reno.
Gunn said he plans to use the rest of the money to start his own business developing ideas he has long had for software and renewable energy.
"It's going to change my life," Misti Gunn said, fighting back tears. "Living off nothing is just very hard."