Lost sub at bishan park

[Ghostfit]

For example, nitro cars that have a fail safe and when signal lost, the throttle servo can be programmed to close and brake applied. Car will thus not go out of control.

Bro, .....You haben seen a RC car with fail safe kenna zapped and the bugger stops right in the middle of the fastest section of the straightway ?!! ....The impact from another car travelling at full bore T-boning your car is alot worst not to mention 2 cars at one go !

[LittleGiant]

How to play sub ar? The sub underwater can see meh? If play at swimming pool I still can understand. But under murky water, how to tell where it is going?