It is legislation to have side repeaters, it is just now they tend to be within the side mirrors rather than the front fender side (sorry Americanism).
And not just Ford, just about every car now has them incorporated with the mirror housing, as I said it is cheaper and still passes legislation, in fact it could be argued it is a better position as most can also be seen from an oncoming vehicle as well, thus if the front DI fails there is still a forward facing DI working.