A fast-speed Unmanned Ground Vehicle (UGV) is utilized for logistics or carrying casualties in dangerous environments, substituting humans. Controlling the UGV's acceleration is essential for a human operator concerning stability. However, it is not possible to recognize the accurate acceleration of UGV only with visual information. We designed haptic feedback using a Stewart platform for a pilot to control a UGV's acceleration and verified its effect through a user study. The result showed that a user with haptic feedback could drive a UGV with less acceleration on rough terrain than without haptic feedback.