The best place to go this Spring is the A34 around Tot Hill Services.
No, really. At this time of year, this otherwise moribund dual carriageway cuts a path between spectacular efflorescent banks of buttercup-yellow gorse.
And this, I propose, should be taken as a precedent. Far too much of our motorways are lined by the chlorophyllically-dominated greens of various passe shrubs and trees. As a first step towards a more colourful motorway experience, the M4 around Swindon should be lined by swathes of pyrophoric tulips; the M1 around Birmingham should be lined by roses; and the M25 in Kent should be surrounded by purple rhododendrons.