Great minds think alike they say. (joke) I would like one of those tacho gadgets too. On the subject of "too fast" mine has the opposite problem. It is a tad slow, but if it is too fast then I would guess it could be a danger eh? The darn things could run over some valuable garden assets if they get engaged and take off. Good thing the technology has put the self propulsion under constant control of the operator now a days.
