Who wears sunglasses when driving…..
A huge number of people who value the ability to see where they're going whilst driving...
And sunglasses are an expensive option for those who wear glasses.
Nonsense. I got a pair of cheap clip on things (easily slide on/off whilst driving), which also came with a yellow night driving pair, for under a tenner from Amazon. I also have a pair of prescription sunglasses which cost no more than a regular pair of glasses.
As for variable light levels, it would be very unusual to keep going from bright sunshine to so dark that sunglasses were inappropriate.
On the subject of glasses for driving (and I agree everyone should have sunglasses in the UK given how low the sun is much of the year) if you are driving a car with modern LEDs then you won't need them but if you are driving one with halogens then I strongly recommend getting night driving glasses as well; makes a huge difference against being blinded by the former (or xenons).
Yep, agreed! I have some cheap clip-on ones (see above), I don't always wear them, but they live in the car and do come in useful for spells, especially on long motorway/dual carriageway drives. Surprisingly useful around dusk (now that most local authorities have set street lighting to require lower light levels before switching on) and also in foggy conditions.