daz said:OK I'll bite, why not rely solely on it?
Sure it may go wrong or not function correctly but then so could a analogue guage.
In which case maybe we should all have 2 guages just in case one goes wrong, and how would we know which one had gone wrong if there was a discrepency?
Yep it's a gimmick, yep it's a expensive luxary, but personally I would not consider it any more unreliable than a analogue guage.
Daz