The 27-year-old followed up her success in yesterday World Cup super-combined event at the Swiss resort with an imposing performance that increases her lead in this season's downhill and overall standings.
She clocked a remarkable one minute and 43.65 seconds for the course, which was a full 1.42 seconds clear of second-placed Maria Hoefl-Riesch.
That significant gap was put into context by the fact 1.42 seconds was also the span between second place and joint 19th place.
Liechtenstein's Tina Weirather finished third, five hundredths of a second behind Hoefl-Riesch.
Vonn's fifth downhill victory this season, and eighth in all disciplines, means she leads the downhill standings by 190 points, with a total of 430, and the overall standings by 352 points, with a haul of 1170.