The electric only feature can be turned on and used up to a speed of around 34 mph at which time it will automatically turn off and the car will operate as usual.

Hmm... that'll come in handle for school zones, or for sneaking out of the neighborhood after that 5:00 A.M. walk of shame.

If the electric only kit is only $45.00, you'd think it would be a standard feature in North America. It hardly seems worth the trouble to leave it out.

RE: rattle is a greeny weenie