I nice looking bit of kit, but expensive.
.... so $500 to prevent being rear ended is cheap .
I'm not sure if it would have helped when the taxi driver that shunted me (on the ST) in the rear, seemed to be more concerned with talking on his mobile 'phone.
No damage to me or the ST, the damage was to the taxi driver's pocket. The Police charged him with careless driving (I think that's what they said - sound right Garry?) and using his mobile 'phone whilst driving (they got records of the 'phone use from the 'phone's history), and they reported to the taxi owner who sacked him.
There may be some truth in
every cloud has a silver lining.