The tracks loook great!
IMO, I believe that Tokyo R246 seems to be larger than in GT3, as if they increased the scale of it. It's probably just me though.
To get a day time Pod Race, just do a single race at
Tokyo or whatever track you want. When you select your car, choose the Toyota Pod, the computer will automatically put you up against 5 other Toyota Pods every time. So it isn't a special race, it's just a standard race.
Later!