I have been noticing suden small shaking of striring wheel which lasts only a split second. The feeling is like accidently touched a wire with small electric current and get starttled; or touching a running massager. It happens on both local driving and highway driving. I sent my car to Tesla service center once for this issue but they could not do anything due to not be able to reproduce the shaking during their test drive. Anyone have some thoughts on what might be causing such small and short stiring wheel shaking ?