In less than one year, it was the first to deliver a prototype vehicle.

The original plan was to build five prototype vehicles, with a production total of 25.

A second set of eight prototype vehicles were built between 1961 and 1963.

Road testing of a prototype vehicle reportedly began in 2011.

A prototype vehicle was officially unveiled on 28 May 2005.

For prototype vehicles using fuel cells, the record is even more impressive.

By May 2000 prototype vehicles were being constructed for testing in 2001.

They said today that workers had agreed to work overtime to produce a prototype vehicle.

The prototype vehicle was displayed at a press conference on March 26, 2009.

Following trials with the prototype vehicle, development work on this ceased.