One big advantage that the folks at Carbon will have is likely much less labour costs than Ford. Heck they can maybe even get them made in Asia - say alongside the new Tata. That would really keep the costs way down.

What we as taxpayers don't need is monopoly cars. Having only one choice takes away the need to compete and that would be an expensive alternative down the road. Still the big three would be at a labour cost disadvantage trying to build these puppies here in North Amercia - unless one of them dedicates a plant specifically for police and taxi builds and negotiates a separate contract with the UAW/CAW.
Not likely that could happen, however with the current strain and give and take on current contracts, I suppose anything is possible.
Scaerio your point is valid except police in North America carry more stuff and tend to become bigger people - Fuzzy - I'm not suggesting that Tim Horton's is the cause, honest.
