Whatsapp: the scourge of the modern age? Along with sensationalist television documentaries and plastic straws.  However, it can prove useful when it comes to organising cycling get-togethers. As one member of our group observed recently, ‘how many groups is it possible to be a member of? N+1?’. The response? “N^1”…  So it came about that we found ourselves riding the longest possible route from L