You can't directly "change" cars in Need for Madness 2 in the way you might in a typical racing game. There's no car selection screen or garage. The game features a set number of vehicles, and which car you're driving is determined by the level and the progress you make within it.
To get a different car, you need to progress through the game's levels. Each level generally introduces a new vehicle or allows you to use a different one based on the stage's progression and challenges. There's no way to manually select a specific car; it's all context-driven.
