The domain of Grampa's homepage, oldcoot.com, does actually exist. However, it has no connection to the show. It is owned by the Granpa Cratchet Corporation, which was about to sue Fox for using their domain. They eventually changed their mind and took the free publicity.
The song Lenny, Carl and Bart are singing in the woods is by Starland Vocal Band. Homer revealed a tattoo he had as a tribute to them in 'Round Springfield' (1995).
Titled after The Fast and the Furious.
One of the two only episodes in the whole series to be animated by the very short lived Korean animation studio Toonzone Entertainment.