A study was initiated to quantitatively assess the technical and economic feasibility of existing and potential types of transmissions most suitable for the gas turbine and Rankine cycle engines. Application of the engine/traansmission was to a full size family car. The study was accomplished through a two-phase, multi-task program which included: (1) evaluation of transmission types through a feasibility study and ultimate selection of a transmission type; (2) evaluation of the selected transmission type through design calculations and layouts, performance analysis, control system analysis, and cost analysis. A number of different types of transmission were initially evaluated including conventional multi-shift, hydrostatic, hydrokinetic, electric, belt/chain, hydromechanical, and traction types. Requirements, scope of work, and other data utilized in and pertinent to the study are included in the appendices.