On 10 and 11 December 2019, the resurrected manufacturer presented the Delage D12 Concept Car to a selection of potential clients in California as a world premiere.

Both have the same carbon chassis, the same naturally aspirated 7.6 L V12 engine developing 730 kW (990 PS) and are intended to be homologated to be street legal in the United States, in Europe, and in most major markets.

The D12 is an attempt to offer the closest road-legal car ever made to a Formula 1, using a Monocoque and frontal crash-box in carbon, along with full carbon bodywork with active aerodynamics (front wings, airbrakes, rear wing), offering more than double the downforce of all cars currently road legal in the European Union.

[citation needed] As in Formula 1, Delage also has triple flow brake cooling, and a full carbon rim with a "fan" cooling effect Other characteristics include an interior fully tailor-made for each customer on all its contact points: seat (full carbon), F1 type steering wheel handles, and pedal placement.

The D12 Hybrid Hypercar is powered by a 730 kW; 980 hp (990 PS) 7.6-litre naturally aspirated V12 engine developed by Delage.

In both cases, the customer can convert his D12 coupé himself in a few minutes using a manual conversion system, offered as an option.