1. You without a doubt need a car.
There are two Light Rail train lines now running in Minneapolis and St. Paul that have improved public transportation in the Twin Cities, but it’s still limited at best and doesn’t run late at night (neither do buses). Public transit is non-existent in other parts of the Cities, and through much of the rest of the state. And in the winter, when it’s -30F with a -20F wind chill, it’s downright dangerous to try to get around without a car.