Originally Posted by
Terex
But, when I've seen them on the road while driving, they are so low as to be virtually invisible.
When you've seen them, they are invisible, and yet if they are invisible how could you have seen them..... and if you have seen them then they are not invisible .... and ..... they are invisible, therefore you have not seen them ... but you HAVE seen them ...... error! ERROR! This does not compute.....!