Cole Galloway’s workspace at the University of Delaware resembles a ransacked toy store. There are piles of plastic tubing, swim noodles, stuffed animals, and battery-powered Jeep and Barbie cars everywhere. But Galloway, 48, is a physical therapy professor and infant behavior expert whose lab has a very clear mission: to provide mobility to children with cognitive or physical disabilities.

Galloway started his infant behavior lab to study how children learn to move their bodies. He was particularly interested in finding ways to close what he calls “an exploration gap” — the difference between typically developing children and those who suffer from mobility issues due to conditions like cerebral palsy and Down syndrome. In 2007 Sunil Agrawal, a professor of mechanical engineering at the university, approached Galloway in a conversation he says went something like this: I’ve got small robots. You’ve got small babies. I wonder if we can do something together.

The two professors started building power mobility robots that let disabled children explore their surroundings with greater confidence and independence. But due to the cost and heft of the parts, their early vehicles cost tens of thousands of dollars and weighed up to 150 pounds, making them inaccessible to the families who needed them the most. Galloway’s solution to those problems came to him during a visit to Toys ‘R’ Us, where he saw he could shift his vision of “babies driving robots” to the lower tech “babies driving race cars.” It was then that Go Baby Go was born.

Unlike electric wheelchairs, which are usually reserved by kids above age three, Galloway’s cars can be used in the critical early years of development. He estimates that so far Go Baby Go has retrofitted an estimated 100 toy cars, a small dent for the more than half a million American children under the age of five who have mobility problems. To spread his mission, Galloway has traveled across the country, posted YouTube videos and spoken with dozens of parents. He hopes that others can learn from his work and build cars of their own: “If you’re not going to drop what you’re doing and come work for us, at least contact us — we’ll send you everything we have.”