  This communication presents a longitudinal model-free control approach for
computing the wheel torque command to be applied on a vehicle. This setting
enables us to overcome the problem of unknown vehicle parameters for generating
a suitable control law. An important parameter in this control setting is made
time-varying for ensuring finite-time stability. Several convincing computer
simulations are displayed and discussed. Overshoots become therefore smaller.
The driving comfort is increased and the robustness to time-delays is improved.
