The song Goemon plays in the car is Suki Ni Natta Hito by Harumi Miyako. In the English dub, this was altered to an instrumental track. This was due to copyright reasons as this also affected the Japanese voices on the Geneon DVDs and the French DVD release.
Also known as "Vault Assault."
When Monkey Punch passed away, Mediaset the Italian company that airs the show dedicated this episode and A Pretty Woman Has Venom in his memory.