Runaway R/C Ramen Noodle Cart: Why? Why Not?

The latest in a long line of strange and wonderful gadgets from Japan, this remote-controlled vehicle is modeled after one of those Ramen noodle carts you might see on the streets of Yokohama (mama).
The tiny noodle cart runs on 4 AA batteries, and can cruise along at up to 5 kilometers per hour.