GRAND RAPIDS, Mich. – The knock on Mitt Romney is that, as a multi-millionaire former Massachusetts governor, he’s out of touch with average Americans. And when he casually mentioned his wife’s “couple of Cadillacs” in a speech Friday, the Republican presidential candidate served up one more example to his critics.

 Asked on “Fox News Sunday” whether he understands why some voters would be put off by that, Romney responded with candor.

Ann Romney speaks at a rally with her husband Republican presidential candidate, former Massachusetts governor Mitt Romney at the Kettering University Recreation Center on Saturday in Flint, Michigan. (Bill Pugliano/GETTY IMAGES)

 Romney made only his second appearance of the campaign on a Sunday public affairs show, sitting for a taped interview during a campaign visit on Saturday to Flint, Mich. Romney, who had been trailing former Pennsylvania senator Rick Santorum in the polls here until last week, did not hedge when asked to assess his chances in Tuesday’s critical primary in Michigan, where he was born and raised and where his father, George, served three terms as governor.

“I think I can show that I can fight real hard and come from behind,” Romney said. “I’m planning on winning here in Michigan and also in Arizona. Obviously that’ll be huge for us if we’re able to do that, particularly having come from so far behind here in Michigan.”

Romney said that “people are warming to” his policies and campaign message about fixing the economy and reigning in the federal debt.

“I’m expected to get the nomination in part because I understand how this economy works,” Romney said, adding: “I’m convinced I’m gonna become the nominee, and we’ll be willing to take however long it takes to get that job done.”

Romney was asked to answer the question he dodged in last week’s CNN debate – to identify the biggest misconception voters may have about his candidacy.                       

“I think the biggest misconception would be that I’m a guy that comes from Massachusetts and therefore I can’t be conservative,” Romney said. “But, you know, if you look at my record in Massachusetts and see that I’ve balanced the budget, lowered taxes 19 times, enforced illegal immigration laws, got English immersion in our schools, stood up for traditional marriage, was a pro-life governor, I’m a solid conservative, a committed conservative with the type of principles I think America needs.”