Who was the car invented for?

The car wasn't invented for any single person or group. Its development was a gradual process with contributions from many inventors and engineers over time. Early automobiles were expensive and primarily used by the wealthy, but the goal of inventors was generally to create a more efficient and convenient form of personal transportation than horse-drawn carriages, eventually aiming for a wider market. So the answer is no single person or group, but rather a gradually evolving desire for improved personal transportation.