3:53 p.m. July 7, 2025: An earlier version of this article said that Ryan Cavalieri’s car was nitrogen gas-powered. The car is powered by nitromethane, a nitrogen compound, and methanol. The neon ...

Most people look at a remote-control car and instantly call it a toy. But what if we told you that many of them are actually serious collectables and high-performance machines? In this story, we ...