Traditional neighborhoods are definitely the way to go - new studies are showing how living in them reduces your weight too, but if you're just using them as a new suburb design I think it defeats the purpose.
I think that affordable cars/vehicles w/ high mileage or that run on biofuels will be more of a solution than an expensive fixed transport device like that.
The PRT systems, this one in particular, when planned into a new Xurban design, are the least expensive to operate considerng the cost of roads used heavily. The key is NOT to elevate them. The stations can be gridded to allow for no longer than a 1/4 mile
max walk to each self-defined, one stop pod. Wait time is seconds, two minutes tops. Stops can be anywhere along any route such as individual store clusters, parks, schools, etc. 7.5 years of
non tax abated passenger fares will pay the system off except ofr ongoing maintenance. If you replace buses and other forms of tax abated travel, tax abate the PRT, then the pax can travel for free or so cheaply that the PRT system is unbeatable.
Assuming this is true above, the impact is immense. People don't bike or walk great distances in hordes, 1/3 of the time weather is non permitting or invasive. Walk/bike systems have never been but partial answers and only for the ambulatory few. Retail will not allow anything else except near direct access.
I have no financial interest in PRT btw.