Chiltern "bubblecar" 121 034 is working a crew training run, 5Z68, 08:30 from Aylesbury to Calvert, Claydon, Bicester, Oxford and Didcot. It then returned to Oxford, Bicester and Claydon and is now returning once again from Claydon to Oxford. It is approaching Islip station at 13:23 on the afternoon of Thursday 19th May 2011. Digital Image No. GMPI9125.