Great shots, Jbm32206!
One thing this article didn't get into was pricing and why do we think urban commuter rail is a form of rail that will cost millions of dollars less than building dedicated busways.
1. As shown above, DMUs railcars can run on existing tracks. meaning you don't have to build new road or rail network.
2. Many cities across the country are already going this route, giving us examples to learn from. Austin, currently has a 32 mile/9 station line under construction right now that costs $112 million. That adds up $3.5 million/mile.

A string of TODs are already going up around Austin's urban commuter rail line, which won't open until next year.3. Austin, San Diego (The Sprinter), Ottawa (O-Train), Nashville (Music City Start), New Mexico (Rail Runner), etc. are recently completed rail systems built at insanely low prices. The common tread is that to get rail up and running, they are being built without the historical bells and whistles. Stations are simple at-grade platforms (see Jbm's images above), lines don't have to be immediately electrified and they aren't completely double tracked routes. Instead, they only have occassional passing slidings.
Ottawa O-Train4. JTA's own RTS Technology Assessment Report clearly states that the cost of such a rail system is hundreds of millions cheaper than dedicated busways, despite them refusing to admit it at public meetings.

JTA's consultants definately were not familiar with DMUs (Regio Sprinters in their document) in 2001, which lead to them eliminating this technology early on in the process. Well its nearly seven years later an now there are several examples of this system in America. If it's cheaper and more attractive to riders and TOD developers, JTA owes it to this community to re-evaluate this option for certain BRT corridors, instead of burning nearly a billion for a system of bus superhighways with a "one size fits all" mentality. As a forumer stated a few days ago, to not do so is basically criminal negligence.