Both our 4 and 2 year olds love their plasma cars. We have a very long hallway, and wood floors. There is the possibility that they slightly do scratch the wood floors, but we could not say for sure. To reduce any damage inside, we only keep the plasma cars inside the house, so the wheels do not get to beat up...so that does help. Our kids love the plasma cars so much, (and any visitors that come over love them too), that any tiny scratches that could be happening are worth it...as it is minimal as far as we can see. Thanks.
When I purchased this car for my grandson he used it on our hardwood floor with no problems. He has since used the car outside and now the wheels appear to be able to scratch the floor so it is an outside only car.
To answer your question I performed a simple test and slid the wheels of our Plasma Car against a piece of beautiful walnut laminate wood flooring. The damage was not so much what I would call a scratch as it was a "scuff". The floor's finish was clearly damaged and I could not remove the scuff with a damp cloth.
Plasma cars in our neighborhood are clearly OUTDOOR toys as the kids and even some adults ride them down the sidewalk. The wheels have to be made from very hard plastic to survive the abrasion of concrete and asphalt. The hard wheels as well as wheel bearings have low rolling resistance which produce faster speeds and more fun outside.
I personally would never use a Plasma Car inside our home. They won't roll on carpet and they damage wood floors. To be fair, however, they could be used on ceramic or porcelain tile fooring but then again, they move fast and could roll into walls and furniture.