on the go not only a welcome change but very helpful in many situations and a security aspect - with an amateur mobile device
If you are traveling with more than one vehicle, a mobile phone can be a welcome change because one can communicate with each other especially on long trips - whether for fun or useful and important information. Thus the leading vehicles can for example give information about distance and obstacles to the following car.
But even if you just go on tour with only one vehicle, a radio is a wise purchase. With an additional handset the "2nd Man / Woman" will be reachable and audible outside of the vehicle. Whether in warding in tricky situations or when exploring confusing routes - you are always in direct contact - not only a comfort aspect, but also a safety factor.