Yeah but those are only falling and not get shot that is achieved by the weights being defined as chassis' and calling wakup() on them giving the physref away for gravity I still dont see how we would actually add non downwards velocity to objects.
Installing a big rod to the camera may work I saw it (the camera) does have weight you can actually knock over the "advertising columns" in valocity with it, but that would look silly bashing the car with your camera to deform it
if there was a way to set the velocity of something that would open up a whole lot of modding opportunities adding guns to cars making booster regions like in cart racing games (from the top of my head)
bashing the car with your camera to deform it 
