The Chiltern "bubblecar" normally only works in the morning peak hours, so this service is usually operated by a 165 unit. On the first day of working by the new 121 034, however, the 10:38 from Aylesbury arrives at Princes Risborough at 10:55, with a rather more distant destination on its route blind! Wednesday 25th May 2011. Digital Image No. GMPI9269.