Iowa's not the center of snow. You may get some, but lots of folks get worse. I used to live in New Hampshire, where I had to dig a tunnel to get out of my house one year. It was before front wheel drive was popular, so we learned to drive rear-wheel drive cars in snow or got Jeeps (real Jeeps, not Cherokees or other SUV boxes).
Then front-wheel drive became popular. I got a VW Scirocco. It was massively better than rear wheel drive, almost as good as my Jeep until it got really deep.
I live in California now and have never driven my IS in snow and never will unless global warming backfires badly. But I expect it to be pretty twitchy even with the best snow tires (and impossible without them). Here's my evaluation:
Front-wheel drive car. Really good in snow (especially with snow tires) and not horrible on dry pavement.
4WD car or SUV. Beautiful in snow. Makes you wish it snowed all the time. Costs more, uses more gas, handles worse (maybe Audi's don't handle worse) on pavement.
Rear wheel drive car. Just barely driveable in snow with good snow tires. Better than anything else the rest of the time.