What happens when a homemade go-kart barely functions as intended? Helen Mirren feels ‘insulted’ by ‘condescending’ comments ...

When we last left off, my cheap go-kart didn’t really work. I’d sourced everything and assembled it all, but when it came time for the moment of truth—the first test drive—nothing happened ...

Students recorded videos of their project and cheered along the homemade go-karts as they rolled down ramps, under furniture and across floors.