A Lotus Elise.
A Jaguar E-Type.
A
Shelby Cobra.
A Ferrari 250 Testa Rossa.
A Pagani Zonda.
Any car that is amazingly
beautiful, graceful, fast, and curvy. In a word, a "
hot" car. A car that is "sex on wheels" turns heads, elicits wolf-whistles, and inspires song, poetry, and envy.
Alternatively, "sex on wheels" is the bikini-clad model leaning against the most expensive prototype at a car show.