A family of four and five suitcases. In a classic family van there's plenty of room for them all.But what about the car's maximum permissible load? Especially now, just ahead of the holidays, it's worth taking a closer look. Many forget that plenty of extra features often add substantially to a car's weight. And that means less permissible cargo. We tested a base-model VW Caddy and a somewhat luxurious Renault Scenic, and demonstrate that you drive more safely when you know your car's actual empty weight and how much cargo is actually allowed.