Going on holiday by car has the advantage that you can take a great amount of luggage with you and throw a (seemingly) endless number of items in your boot. But if not properly stowed, bags, sports equipment and toys can pose a risk on a long car journey. Here are some tips from the GTÜ, a German organization which tests motor vehicle safety, on how to pack your car safely. Start by putting the heavy stuff down the middle. The car’s centre of gravity is where the most weight is. The lower and and more central the luggage is stored, the better. A higher centre of gravity is disadvantageous and …