Reed finally pulled his goggle off and dropped them on one of the work benches so that he could more clearly see his latest invention, giving it a thorough looking over. He had just created it and already Reed was looking for where he could take it apart again and make it better. "I think there's still some excess fat that we can cut. I only built this as a prototype. The final model that will actually power the Fantasticar may need to be bigger... but as we've yet to test the actual upper limits of the output..."
Reed looked around the lab, clearly searching for something, then turned an excited, boyish grin to Johnny. "Would you like to put it in a Go-Kart and test it out?"
Really, they should probably make Ben test it- given how he was mostly indestructible (as far as Reed could tell) and also a pilot... but that didn't mean that he and Johnny couldn't get it secured into the Go-Kart and have a little fun themselves before officially testing the new engine.