Awesome idea, Leon!
There's a massive lump in the road as you approach the railway overpass bridge in Toongabbie, and the first time I drove over it a few months ago I very nearly got airborne, and the car lifted enough to throw it offline. Mind you, I'd already slowed down enough to turn onto the bridge and the light had just turned green, so I was in no rush...
Might have to break out the fluoro-coloured spray paints and mark the road.
Then we'll see if Blacktown, Holroyd or Parramatta councils will again fight it out to see who's responsible for fixing it (or blame each other for it not being done). That seemed to be their excuse for not upgrading the bridge itself properly...