When Kevin and Alice are broken down while test driving the Austin Healey Sprite, Alice says the problem with the car is the alternator. Unless the engine had been modified, Austin Healeys did not come with alternators.
During the dance scene, Johnny Rivers' Slow Dancing is played. The year was 1973 but this song version was released in 1977.
"Swayin' to the Music (Slow Dancing)," the song featured in the "Alice in Autoland," is a song by Johnny Rivers and wasn't released until 1977. "Alice in Autoland" is set in the winter of 1973, over four years prior to the song being released.
When Kevin is driving you can see the steering wheel of his 1965 Oldsmobile is an aftermarket product from the 80's or 90's.