Sure, go to the KNOCK OFF! Grrrr. Anyhoo, looks like Kawasaki is spreading out.
Probably one of the biggest (well there's a few) Wave Race knock offs to hit the PS2, Wave Rally (nice name) has gotten sponsorship from Kawasaki.
here to see a screen.
Granted, this doesn't mean Wave Race: Blue Storm couldn't be also sponsored by Kawasaki. If Nintendo decides to go with a different sponsor, the crafts will not be allowed to be referred to as "Jet Skis". The politically correct name would be "Personal Watercraft" due to the fact that Kawasaki owns the name "Jet ski".
Thanks to Kevin for the juicy kibbles.