[ars]

> 400k km

? LOL

Why not just use megameters? 400Mm

OK, something about that looks odd. But what's the point in SI units if you can't actually use them?

Maybe 250k miles?

[14u2c]

When have you ever seen a car dashboard display Mm. It was perfectly clear what they were trying to convey.

[_carbyau_]

I am totally using Mm next time someone talks cars/bikes with me. Thank you.

[taneq]

Ah but is a megameter 10^6m or 2^20m? ;)

[s_tec]

That would be a Mebimeter, according to SI. Whether or not this sounds silly is another issue.

[hexo]

Nope, miles are always a bad choice.