25 vehicles ended up in a pileup in Iowa due to the first major winter storm of the season, which plowed across the country in late December. That storm brought whiteout conditions to much of the nation and made roads slick and dangerous. Whenever winter storms come – particularly the first storm of the year – you have to take into account the fact that many drivers who would otherwise be fine on the roads will suddenly become extremely dangerous to everyone else on the highway. Texas isn't known for its particularly bad winter conditions, but they do happen sometimes, and you need to be prepared.