Is this claim true, or not?

[Seth Dimbert]

>From Time Warner (Road Runner)'s website:

Question:
Will my cable Internet connection slow down as more users take the service?

Answer:
No. Our competitors would like you to think so. Because of the scalable
features of Time Warner Cable's hybrid fiber coax (HFC) design, we have
nearly-infinite growth capacity. Today, our high-speed Internet services use
just 6 megahertz of our 750 megahertz coax plant. In addition, we are only
using 1600 fibers of the 4800 fiber optic lines we have run throughout
Kansas City - the rest is "dark," awaiting future needs. Click here for more
information.

So? What's the deal? Is it true, or not? I'm currently using DSL and getting
162 kbp download and 105 kbp upload. TWC tells me that they will give me
speeds higher than this. Once and for all, is it true?

-SD