By Martyn Herman RIO DE JANEIRO, Aug 7 (Reuters) - Dutch road race gold medallist Anna van der Breggen said she had to snap back into race mode after seeing stricken team mate Annemiek van Vleuten crumpled by the roadside on Sunday. Van der Breggen was part of a chasing pack pursuing Van Vleuten and American Mara Abbott when her compatriot, who seemed on course for victory, suffered a horrible high-speed crash that left her in hospital with concussion and back injuries. The 26-year-old went on to catch Abbott 200 metres from the end of 137km Olympic race around Rio's stunning coastline. More...