Each Hand Car is assembled by hand one at a time, the same way they've been made for over 50 years. We use cast iron wheels, aluminum cast components, sealed bearings, bronze bushings, stainless steel side rails, cushioned seats, one piece poly molded car bodies, anti-reverse devised and bumpers (front & rear). MORE FACTS 1. Minimal maintenance costs. 2. Low labor cost to operate. 3. Uninterrupted operation for repairs. 4. Customized track design. 5. Easy installation. 6. Complete inventory of parts for prompt service. 7. No expensive energy - just kid power.