Oops, it's my fault.
With all this talk about "collision detection" I got carried away and forgot that we've had "backup sensor" technology for almost two decades.
Anyhow, it is typical for the "backup sensor" equipment/kits to be based on ultrasonic principles and as such it is perfect for several types of applications. In general, it is particularly good for low speed and short distance collision detection.
The "collision detection" technology that is now making it into the higher-end vehicles is definitely another story which is what got me all revved up. Dang...

I guess we'll have to wait a little longer for that kind of feature, aren't we?
Cheers;
MSantos