[Johnno]

Looks great!

Those last two pics suggest there's an alternative module to convert the layout from a big 4-laner to a monster 2-laner? If that's right, I think that's a great idea

Good catch there. You are the second person to actually pick this up   well done.

Yes that is correct indeed, that one module adds a whole new dimension to the track and literally drives all four lanes with two people with two lanes being driven in opposite direction as to normally run, makes interesting.