It&rsquos not as though this book is not engaging. It is, in its own &ldquoooh look, we&rsquore two batty British women&rdquo way. But the necessary self-implication is missing. We would like to know how Mustoe connects with Che. Does she approve of his politics As Mustoe and her companion Katherine pedal past the pampas, she refers routinely to the road trip that is now available in three variations to the Anglophone world &mdash Che Guevara&rsquos book The Motorcycle Diaries, Walter Sallis&rsquos eponymous film, and Alberto Granado&rsquos Travelling with Che Guevara &mdash but we never get much out of all these.