Coiled Coax Wire, Inductor?

I never got to finish this discussion in school. I am under the believe that coiled CoAX wire is not an inductor, the one instructor I discussed this with believed it was. Here is my theory. An inductor is like a 50 lane highway, cars come on the on-ramp and fill all 50 lanes (assuming the wires in the winding are not insulated from each other.) When the off-ramp is clear, alot of cars can get off, but since there is only one lane to the off ramp, there are a lot of cars that keep the ramp full. More technically, a proper inductor creates a magnetic field around the wires. Once the electrons have fully permeated the windings, the EM field is at full strength. As power demand increases, the field collapses and sends those loose electrons back into the windings to keep the wire fully charged. Now CoAX is shielded, insulating the conductor inside it's own Faraday Cage. The loose electrons from the conductor can only radiate to the outer braid and then they return to ground. The field can not be sustained and the cars can only travel down one lane of highway.   No magnetic field, no extra lanes to hold more cars, no induction of the signal. Because of the quality and wave length of the shielding, the Faraday cage will not fully shield the wire from all EMI. However better CoAX will return more EMR to ground than what can reach the conductor. I have noticed the difference between RG58 and RG8U to this effect. Does anyone have any input on my theory?