If you're looking for cruise routes, I did one for my birthday in August .. The jist of it is:
Starts at City West, down to coast, all the way up coast to Mindarie, cuts through pines to wanneroo raceway, goes all the way to the end of neaves road, and over great northern, up into chittering valley, back down to great northen, through swan valley and ends at bayswater.
It's like a 200k to 300k cruise, and with 3 or 4 ten minute breaks, it lasts about 3 hours.
If you're interested, I'll dig up a map and post it.
Jason.