I've read speculation elsewhere that the two police hybrid vehicles will be Explorer and Expedition. I really expect Ford to discontinue the Taurus and C-Max in North America.
Ford must expect sedan sales to decline for both Focus and Fusion to fit at Hermosillo. I believe jpd80 said elsewhere that the next Focus and Fiesta will share a platform that will not be shared with the Escape, but I wonder if the next North American Focus sedan and Fusion will share a platform, just as the Civic and next generation Accord will.
NG Explorer Hybrid and NG Expedition Hybrid do make sense for new police pursuit vehicles.
Taurus production is pushed out until 2023 from 2017, which is a whole new 6 year product lifecycle. That's why I expect the new Taurus to make it to NA as a MY2018 Taurus. The only other option is for Ford to continue to make the same outdated Taurus for 7 more years....which will never happen.
Hermosillo is working double shifts, 6 days a week to keep up with current Fusion/MKZ production. Focus Sedan, Focus Hatch, Focus ST, C-Max and the new Lincoln C-Segment vehicle will require extensive expansion investment. In the US alone, Fusion sales are down about 20k units to 246k as of Nov. MKZ are up at 28k. With all Fusion/MKZ production for US and Canada shifted to Hermosillo, their next option is to go three shifts just to keep up.
NG Fiesta is already set on it's new modified/upgraded b-Segment platform(not shared with c-segment Focus/Escape), with production for NA moving to Thailand.
Civic and NG Accord will share a heavily modified 'version' of the same platform, but not the same platform. Meaning they can't travel down the same production line.