However, the Drivermocion probably has the most complex offer on the market, with 6 different devices each with 4-5 messages, ranging from the polite to the downright rude, with the mandatory emoticons included. You can get the Original ("thanks", "sorry" and three smileys), Animating (five animated emotes), Middle finger (three smileys and the middle finger), Pure faces (five smileys), China's heart (heart-shaped, five smileys) and Glamour girl (pink fur around the device, "back off", "thanks", "sorry" and two smileys).
Useful or not? I'd say no, but it's up to each driver to decide. I'd say that £19.99 (about $40) is quite a lot for what is basically a car toy.
via.