Evidence supported that independent mobility might improve different skills for children with mobility impairments, including spatial awareness skills, eye-hand coordination, visual perceptual skills, spontaneous vocalizations, initiation of contact with others,motivation to explore and an increased ability to interact meaningfully with peers. Although the mobility devices are considered to be used to compensate for disabilities causing difficulties with the accomplishment of daily activities and social roles, the current standard of clinical practice in the United States for power wheelchair training is that children must demonstrate certain prerequisite abilities before they are eligible. As a result, power mobility training, based on readiness, if offered clinically to children between 2 and 6 years old, with 3 years being the average age of the youngest child being recommended for a power wheelchair.However, several studies have demonstrated that early power mobility training is feasible, even for the children who may be categorized as in a "not-ready" group based on their age, motor or cognitive abilities. These children had various types of disabilities which limited their self produced locomotion. Most of them were younger than 3 years of age and the youngest one was only 7-month-old. The early power mobility training allowed these young children with mobility impairments move independently and have positive impacts on overall development. The investigators reported increased vocalizations, increased arm and hand movements, greater motivation to explore,increased self-confidence and curiosity and positive effects on family life in these children. Power mobility devices can not only be designed to compensate children's impairments for independent mobility, but also be used as a novel, training device to address socialization, body functions, activity and participation goals. Combined with a family centered (e.g., coaching of parents), functional approach which aims to promote better functioning in the context of daily life settings (e.g., home environment), early power mobility training can help to enhance development and improve social participation in children's daily life. Current power wheelchairs have limitations that limit their functional use in the community. These include their size, weight, cost, accessibility, ease of transportation, maintenance requirements, adaptability to the body growth and social acceptance. Experimental devices have the potential to address some limitations such as size, weight and cost but may be years from commercial availability. Providing a new option of device for early power mobility which addresses these environmental limitations is necessary. Furthermore, this device can also be used to focus on the three ICF levels as a training tool. For example, our technique report of modifying ride-on toy cars as power mobility devices introduces an alternative way to provide early power mobility training. Compared to traditional pediatric power wheelchairs, the strengths of modified toy cars include less cost, more accessibility to community environments, better aesthetic and adjustability. Moreover, a modified toy car is unlike a powered wheelchairs which is a medical device and typically focuses on activity and participation levels of ICF. Various permanent and temporary modifications of a toy car allow clinicians to address one or more ICF levels. For example, more trunk support may help a child to reach the steering wheel and grasp toys during car movement to address an ICF activity goal. By lessening the trunk support modifications in combination with a simple steering system (e.g., a push-button switch), clinicians can provide the child with a more challenging, dynamic postural control during driving to address an ICF body functions and structure goal. The child-friendly frame of the toy car can motivate a child's exploratory behaviors and may have positive impacts on family's and/or other people's perceptions of a child's capabilities. These strengths of a ride on toy car make it become the appropriate candidate for the family and therapists to improve early independent mobility and socialization for children with mobility disabilities.