Egg:

"No. Pulse tracks are designed for Pulse physics - plus other things, tags and triggers which are set-up specifically within the tracks, would not work from Pure to Pulse.

My one regret regarding the ships is that I would have loved to have added a more 'layered' visual structure to them. Wings over plates over fins, layered over a visible chassis covered with nice complicated pipework, weapon pods and blinking lights.

As it turned out, it didn't work visually on the PSP screen (too small, fiddly and 'smeary'), and would have presented too many problems for customisation. The only things that remain from my experiments are the blinking nav-lights and the visible pilot.

I would've liked to see a grid full of engineers and floating robot thingies before a race, too. Sadly, we just didn't have time (or memory) for those sort of niceties."

Just saw this oldish (December 2007!) post from Egg on the WipEout Pulse section, looks like he got his way with the ship designs in the Fury pack...