Police estimate car in Maple Grove fatal crash was going 80 mph (FOX 9) MAPLE GROVE, Minn. (FOX 9) - Police say a car that crashed in Maple Grove killing three people, including two toddlers, was traveling about 80 mph in a 45 mph zone. According to the Maple Grove Police Department, the speed estimate is "conservative." The vehicle appeared to have crossed the median and struck a tree, breaking into two pieces. Family mourns loss of two children and mother after fatal crash in Maple Grove A car police think was going 80 mph before it crashed contained three members of a family, including a mother, a 2-year-old and a 3-year-old over the weekend.