[Gordonjcp]

So, considerably less than the average articulated lorry, or indeed Skoda Octavia?

[Symbiote]

No, very much around the average for an articulated lorry.

But metro trains stop and start every 2-5 minutes all day, last 40+ years, but also travel on a very smooth "road".

[Gordonjcp]

You must live somewhere without a lot of road haulage, or without any taxis.

[Symbiote]

I don't have the link to hand. It was figures from a forum for drivers discussing what "average mileage" would mean on a British articulated lorry.