Super shift kit?

[Matricon]

Just browsing eBay and I see a seller that has an sbp shift kit look alike BUT it has three chain wheels on the freewheel crank instead of just 1. This means you could have up to 27 speeds instead of 9 like normal. It comes with an electric motor but has anyone tried this with a gas motor?

http://www.ebay.com/itm/48v-1200w-S...41?pt=LH_DefaultDomain_15&hash=item4abc81fdd9

Scroll down and you'll see it.

 

[The_Aleman]

Those have been around quite a while, even longer than the SBP kits. Anyway, I can't say I've seen anyone use a front derailleur with a gas shifter bike.