Most of the components of a Test Drive game seem to be already in game -economie -fuel consumption -police -car dealers/tuners -multiplayer (rooms with high player numbers in beam mp) What still needed is - a persistent world -assets to buy things like houses with different size garages/stores etc -some social places where you can meet up(preferable a Casino ofc.. even when its a cheap rip off of any android game, people loved it in TDU2)