Sinclair C5 major consumer organisations published sceptical evaluations. The Automobile Association questioned many of Sinclair's claims in a report published at the start of May. It found that the range of the vehicle was typically only about 10 miles (16 km) rather than the promised by Sinclair, and reported that the C5's battery ran flat after only on a cold day. The C5's running speed was more usually around than the claimed , while its running costs compared unfavourably to that of a petrol-driven Honda PX50 moped. The stability, general roadworthiness, and especially the safety of the C5 were questioned, and the
Clive Robbins and Clive documented their observations and techniques in painstaking detail, making and transcribing recordings of their sessions. When Paul left Sunfield in June 1960 Clive accompanied him, gripped by the urge to continue what they had started. They visited 26 curative homes across Europe, giving illustrated presentations and live demonstrations of their work, then spent the next six years in Philadelphia exploring and establishing the work which they called therapy in music. A research grant from the National Institute of Mental Health supported them in this. There followed seven years in Europe where Paul and Clive worked as Lecturing Fellows