Vehicles can drive on snow (ice isn't fun). You just go slower, keep larger distances between the car in front of you, etc. Our roads, most of them at least, are quickly plowed so we're not driving through a foot of snow or more, not even 4" of snow.
Last Friday it was -10º F in the morning and I had the day off (not due to weather). We had some last-minute things (a phone case for a new phone and a gift card) to get and the plan was just run to Walmart. Then my Mom called and said WM has a "yule log" cake but the one we were at didn't while another one 10-15 minutes away said they did, so we headed there. Then my wife texted and said get a gift card from Bass Pro Shops and while I could buy it at WM, there's a Bass Pro close to the 2nd WM and we ended up there. I dropped my daughter at the door, she ran in and go it so we both didn't have to freeze (the wind 'hurts' your face). I was driving and that's why she ran in.... plus she's younger !
So our ~1 planned trip ended up taking 3+ hours. Oh, and we weren't in empty stores with minimal employees working - stores were busy, roads were busy. Saw a total of (2) cars that had slid off the road. That's something I noticed that's different from many years ago too and I attribute it to anti-lock brakes, traction-control, etc. Seems clear those things definitely help tremendously. It doesn't make us invincible either as I'm not saying that at all.