Tbh I don't think 15-20 is that bad for the conditions as you say. I suspect if you get most modern cars, especially those capable of carrying 7 people + luggage, and make them trundle along in 2nd all the time the results would be much the same.
@s785 started
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Tbh I don't think 15-20 is that bad for the conditions as you say. I suspect if you get most modern cars, especially those capable of carrying 7 people + luggage, and make them trundle along in 2nd all the time the results would be much the same.