Mazda has flirted with the idea of a larger sports car almost since the RX-8 went out of production, and most of those flirtations involved rotary engines. But a tantalizing rumor suggested that a so-called RX-9 is in development sans Wankel. Instead, it’d feature a turbocharged inline-six engine, along with rear-wheel drive. Attached to Mazda’s beautiful interior and exterior design, such a car could be a big hit for the Japanese brand.