That very much depends on whether you are a farmer or not, but I have heard
that the Red Diesel exception is one of the things that might be
withdrawn to tackle global warming. Does any other country have such a
scheme?

I don't somehow think your plan would work as towing a trailer would I
imagine reduce the range and sitting on the e road running your generator
might be seen as actually powering the vehicle.
I do wonder how long it will be before many generators, compressors and the
like are regulated. These things sit there often for hours running doing
nothing and are hardly pollution free.
Brian

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The Sofa of Brian Gaff...

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"misterroy" wrote in message
...
Idly musing about life at work the other day, electric cars came up, and
their range. We struck upon a solution. A trailer. A trailer with a diesel
generator on it, the electricity going back to the car. Could we run it on
red diesel, and not have to pay the congestion charge?