Congrats on 40 years, Mark Sullivan!
by DATTCOCongrats on 40 years, Mark Sullivan! Today, June 29, 2018, DATTCO celebrates the 40thanniversary of one of its finest motorcoach operators, Mark Sullivan. During an informal ceremony, Mark was surrounded by colleagues who took turns sharing memories from the past four decades. Mark has driven more than 3.5 million miles over his career. His professionalism […]