[Rob Channell]

The ultrawideband technology works because the signal is spread over a large group of frequencies. If some frequencies are covered with a signal, others can be used to recreate the missing data with algebraic coding techniques. This has been used already in long range wireless modems. Once several of these type wireless modems get turned on in the same area, the signal to noise ratio will suffer and the available bandwidth drops. I imagine the same is true of the other stuff. Once they start using it someone else will start producing a lower cost noise generator. Put these on several cars in an area and the system will have a lot more trouble. Should be pretty easy to come up with a bunch of low power transmitters, eh?

Oh, and don't do this because the FCC will likely take issue with it. Just pay your "High Speed Road Use Tax" and move along.........