There are many factors investors like about Ford, but there's one growing chunk of business nobody is talking about.When it comes to iconic automaker Ford Motor Company (F 1.80%), there are plenty of talking points. Investors could bring up its vibrant dividend yield of 5.5%, its massive losses on electric vehicles (EVs), its struggles in China, and even its dominance with SUVs and trucks. But the best part of Ford right now, Ford Pro, is what nobody seems to be talking about.Booming business"Ford+ is on tr ...