Interactive travel-time map tool

This shows you on a map of your favorite city how far you can go by car in varying times in minutes, on a chosen day of the week, at a chosen time. It is called 'isoscope' and you can find it here. 

Above is a map of Seattle, with the white dot of the starting point centered on Redmond, the home of Mighty Microsoft, and the blue area shows how far you could travel by car from that starting point at 2:00 PM on a Wednesday in ten minutes of driving. The dark box on the bottom of the map displays the choices of days and times of day, and the different choices of travel times in minutes.
Just insert the name of your city in the search box, upper left, and make your choices. To position the white dot of the starting point, choose your spot on the map and then double click it. Happy motoring!