The XG prototype soldiered on as a component testbed until 1948. The first prototype, acting as an aerodynamic testbed only, flew on 21 October 1960. The Gremlin proved a popular testbed for experiments with alternative fuels. The glove is intended as a testbed for supersonic laminar flow. Flight testing began in late June 2000 on a modified A340 testbed. Lamborghini engineers used the Evoluzione as a testbed for many other technologies during its existence. Boeing built a large, specially designed pylon for the testbed. Yak-42 used as testbed for radar for Yakovlev Yak-141 fighter. Ground tests performed with the static testbed produced a thrust of around . Camino's current HTML5 support via the "HTML5 test" standards testbed is limited. Ultimately, the M1911A2 project provided a testbed for improving existing M1911s. I served as a testbed for the use of the aircraft as a weapon. The B-23 also served as a testbed for new engines and systems. This variant is a company-funded testbed for alternative fuels, flying on liquefied natural gas. The Convair X-12/SM-65B was the second, more advanced testbed for the Atlas rocket program.