In this edition of Drive It! we check out the natural gas/gasoline-powered Seat Leon ST TGI, examine the sporting prowess of the Toyota GT86, and attend a gathering of blasts from the past at the Porsche Rennsport Reunion in California.Present it! Opel AstraThe VW Golf has traditionally left the rest of the compact class in its wake. Opel is now out to challenge that dominance with the fifth generation of the Astra. Slick design, an ambitious weight-loss program and a new set of engines are intended to make the new Astra a genuine contender.There’s a variety of new technological features such as the matrix LED lights - the first on a compact. Despite its enhancements the Astra remains an affordable prospect, with prices starting at €17,260 in Germany. Opel throws down the gauntlet ... Test it! Toyota GT86Toyota hopes its GT86 will appeal to enthusiasts. The low-slung and extremely aerodynamic 2+2-seater features a compact, high-revving front-mounted engine with rear-wheel drive.The two-liter four-cylinder boxer puts out 147 kW and accelerates the GT86 from zero to 100 km/h in 7.6 seconds, with a maximum speed of 226 km/h. A low curb weight of just 1,239 kg and a low center of gravity mean the GT86 can really corner. In Germany, it's also available with a manual 6-speed gearbox, starting at €30,750.Examine it! Porsche Rennsport Reunion V at the Laguna Seca RacewayPorsche has been inextricably linked to motorsports for decades. The mean machines from Stuttgart have graced racetracks around the globe - including the US.The Porsche Rennsport Reunion series, named after the carmaker's racing division, has become a pilgrimage for fans. Fans can check out legends of racing from yesteryear - both the cars and the drivers. Drive It! popped along to the three-day extravaganza. Taste it! Seat Leon ST 1.4 TGI ErdgasFor those looking for a drive technology that's both environmental and economical, a bivalent drive system would seem a promising option. Seat has one such model: the Leon ST 1.4 TGI. The wagon is powered by a turbocharged 1.4 liter engine with direct injection, which can run on either natural gas or gasoline.Filled up with 15 kilograms of natural gas and 50 liters of normal fuel, the manufacturer claims a combined range of over 1,300 km. Drive It! looks at whether the car is really as green as the car maker says.Vintage! VW Beutler Pickup von 1950The VW Beetle is a legend. It was in production for 65 years, from 1938 to 2003. More than 20 million were built, with the last one rolling off the production line in Puebla, Mexico.The version we're looking at, however, is anything but mass-produced. Only 10 handmade Beetle pickups were ever built - and not in Germany or Mexico, but in Switzerland. The rare specimen is named Volkswagen Beutler Pickup and was given an extra cargo area to carry goods in 1950.