Blow the wind southerly is a beautiful ballad but its basic premise of blowing one home does not seem to apply to electric vehicles. In fact the opposite seemed to be the case last night in that an evening trip to West Allotment up the A19 with a strong wind behind made little difference to the mileage but presented a considerable invisible "wall" on the return journey. However, the wind free tyne tunnel with its uniform entrance and exit slopes seems to present a power neutral consumption zone. Thats useful then.
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