The MD-TJ 42 Jet Turbine creates the most versatile sailplane sustainer system ever made. The installation weighs a mere 17kg and with an additional 17kg of fuel an amazing 150km range is possible, climbing 2m/s at 140km/h. In the unlikely event that you are late with that critical appointment with your dear partner, you may even blast home at 220 km/h, saving the day in heroic fashion.
OR, you can (in Red Bull Air Race style) whip around a pylon race track like a fighter pilot…..