they returned the hire car , hopped onto a passing helicopter and hitched a ride to the calais-dunkerque airport ( it was definitely the comfortable way too cross the north sea and english channel ) after apologising to aaron for lumbering him with the smelly sail cover and its contents , after all it might be needed for evidence in the future , they disembarked and dumped their bags in davids 4x4 , which russell had waiting for them , and no he could not drive them through france , neither of them liked travelling in the back .