http://www.thecarconnection.com/images/gallery/8591_image.jpg http://www.thecarconnection.com/images/gallery/8592_image.jpg Toyota has been eyeing Nissan's success with the revived 350Z - and apparently, from spy pictures nabbed this week, it's been a little jealous of supercars like the Porsche Carrera GT, too. Toyota 's been caught testing what some insiders are calling the "TXS," a limited-production exotic that might be powered by a V-10 engine worth 500 hp. Pictures show the TXS with enough cladding to disguise much of its shape, but clearly, this is no Celica or MR2-sized sportscar. Insiders suggest the car will tip in at less than 3000 pounds, giving its 500-hp powerplant (with 370 lb-ft of torque) a serious chance at catching the likes of the Porsche and Benz supercars. Top speed could reach 190 mph, the same league as the 550-hp Ford GT. Whether the drivetrain offers any version of Toyota 's hybrid technology is unknown. Whether the final vehicle is sold as a Lexus or as a Toyota , it's likely that a limited production run of about 10,000 units is in order. Expect a debut at the 2005 Tokyo Motor Show and an on-sale date soon after - with a price tag well over $100,000.