The slowest electronic ride-on construction toy for kids can run up to 2 mph, which is your speed when you are brisk walking. The speed may be slow for your aspiring driver. However, a slow speed is important if it is the first car of the child. It will help the kid steer with safety. For preschool kids, however, you can opt for a ride-on with a max speed of 6-8 mph (with all the safety features, of course).