Car Velocity Problem

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1


(I always press W and A, D)
as you can see sometimes work well but, sometimes it’ll stop or go backward

I don’t know how to make velocity working
here is an code

while true do
	local SteerTotal = Seat.SteerFloat * MAXTorque
	CurrentTorque = CurrentTorque + (-SteerTotal - CurrentTorque) * math.min(1/60 * Seat.TurnSpeed, 1)
	FLAtt.Orientation = Vector3.new(FLAtt.Orientation.X, CurrentTorque, FLAtt.Orientation.Z)
	FRAtt.Orientation = Vector3.new(FRAtt.Orientation.X, CurrentTorque, FRAtt.Orientation.Z)
	
	local ThrottleNum = MAXVel * Seat.Throttle * multiply
	local Velocity = -Seat.CFrame.LookVector.Unit * ThrottleNum
	SetAngularVelocity(Velocity)
	
	wait()
end