Chatham-Kent OPP have slapped four people with stunt driving charges on the 401.
Three of those were last Thursday within a two-and-a-half-hour span, going more than 50 km/hr over the limit.
A 19-year-old from London was caught near Victoria Road around quarter to nine that morning; shortly after 10 officers pulled over a 24-year-old from Brampton; and then around twenty to 11, an Alberta driver was stopped near the French Line exit.
Meantime on Sunday, officers charged a 19-year-old from Windsor near Bloomfield Road with racing.
All of the accused had their vehicles impounded for a week.