The transformation is made possible by a centrally located electric motor, which stretches the vehicle with the help of two mechanical screw-and-nut gears by exactly 746 millimetres to its full extended length of 3.74 metres.
The longitudinal members run on low-friction precision rollers and disappear like a drawer in the rear of the floor pan.
Despite its variable length the engineers succeeded in designing the adjustable floor pan with the torsional rigidity necessary for a roadster.
However, since a diesel engine has no spark plug to act as an ignition source, operation on natural gas alone is technically impossible.
To configure the turbocharged in-line engine for dual-fuel operation, a number of modifications are required, including installation of a tank for the natural gas and a gas-injection system.