diesel engine on Transit

When is Ford going to equip the North American Transit Connect van with a diesel engine like they do in the rest of the world?

GM has just begun offering a German made Diesel engine in their Chevy Cruze. This car gets the highest mpg of any non-hybrid vehicle in the US.
I do not understand why Ford doesn't offer a diesel option in the Transit.  
Craig 10/18/2013
Duh! Jerry, your absolutely correct. Mallaly has been spouting off how Ford is going to offer their vehicles in gas, hybrid, electric, and diesel for years. Still no diesel.