default: NOT_REACHED();

		case TAM_ORIGINAL: accel = this->acceleration * (this->GetAccelerationStatus() == AM_BRAKE) ? -4 : 2; break;

		case TAM_REALISTIC:

			this->max_speed = this->GetCurrentMaxSpeed();

			accel = this->GetAcceleration();

			break;

	uint spd = this->subspeed + accel;

	this->subspeed = (byte)spd;

	{

		int tempmax = this->max_speed;

		if (this->cur_speed > this->max_speed)