It’s true I do drive a bumbling old Land Rover that probably emits more harmful gasses than a power station but I do aspire to a cleaner, greener lifestyle.

I’d be the first to go zero emissions if I had the money – I do live in an eco house that doesn’t swallow any fossils fuels. Which makes the idea of owning a hybrid 450h even more of a mystery to me.

The problem is that on A-roads and in the country, I have struggled to achieve more than 34mpg from the Lexus. Even with careful driving on the M4 I can barely managed 39mpg, still 6mpg less than what Lexus claim it can do.

Not only that but the RX battery pack is pretty useless. Even in a stop-start urban traffic jam, the range is tiny and once you hit about 20mph, the engine automatically kicks in.

And when it does, the 3.5-litre V6 is a total plodder. It’s less exciting to drive than a Fiat 500 TwinAir and the engine sounds hollow and rather empty.

Yes, I can save £100 or so in road tax every year driving this hybrid but the over-riding question I have about RX 450h ownership is simply this: ‘what’s the point?’