Brian Gaff wrote

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withdrawn to tackle global warming.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?

Yep, but not many.
https://en.wikipedia.org/wiki/Fuel_d...European_Union

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.

Corse it will work if the generator is big enough.

I do wonder how long it will be before many generators, compressors and
the like are regulated.

We have banned new 2 stroke ones.

These things sit there often for hours running doing nothing and are
hardly pollution free.

**** pollution.

"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?