By Lauren R. Giannini It sounded like a Hollywood promo for a movie: 60-year-old equestrian and her friend ride two ex-racehorses 3,300 miles coast to coast to prove that off-the-track Thoroughbreds are phenomenal riding horses. It actually happened in 2016 when Valerie Ashker took her passion for OTTBs on the road, literally, accompanied by Peter