Trust them to get it wrong

Pay 40 or 50 grand, or even more, for an electric or hybrid car and what do you get? Wonky on-board technology, in some cases. That’s gadgets which report a 10 mph speed limit sign as a licence to do 70 mph and 30 signs as offering 80.
    They also do the reverse, interpreting a 50 sign as 5 mph and slamming on the brakes unexpectedly.
    “Eyes on the road and signs, not gadgets”, is the best the manufacturers can offer.