INDIANAPOLIS — Ford had a really good idea back in 1989. It commissioned Yamaha to conjure a high-revving V6 engine for what became the Taurus SHO, a sport sedan that could take the family to church, and afterwards, kick dad and mom into twisty two-lane backroads for a very spirited Sunday drive. Through generations, the SHO gained a bigger V6, small V8, and finally, a twin-turbo V6 in today’s iteration. Well, sedans are quickly going out in favor of crossovers. No worries because Ford is already building a better SHO, the 2019 Ford Edge ST.