Cold sandwiches can sustain much longer than you expect it to be. Fresh, homemade cucumber and cheese sandwiches are the best kind of sandwiches to pack for a long road trip and if you set up on the road early in the morning, these sandwiches can be had for breakfast on the go. Try to avoid soggy, chutney sandwiches and opt for the dry ones, if you plan on having them later, as chances are they might go bad due to moisture.