The anthropomorphic car Daisy tries to get a ride from is Susie the Little Blue Coupe, star of a popular 1950's Disney short and the inspiration for the appearance of the characters in the movie 'Cars.'
The yellow horse floatie with the red spots previously appeared in 'Beach Picnic,' a 1939 short starring Donald and Pluto.
Mickey briefly does his "Steamboat Willie" dance when he starts up his boat.
This is a "Rashomon" style story, in that it is the same event told from multiple viewpoints.
The convertible which flings Daisy back to her house is being driven by Horace Horsecollar and Clarabelle Cow.