Otto Aviation Celera 500L

Otto Aviation Celera 500L

This cool looking airplane has been in development for 10 years and it might be flying soon. For me, the most interesting part is that is powered by a conventional reciprocating engine instead of a turbine. Of course since it's a German engine and it's certified (in Europe), it's probably not going to be much cheaper than a turbine to buy, but fuel consumption should be much lower, as if anyone who will be able to afford this aircraft will care about mileage.

RED A03 V12 Turbo-diesel Engine

Wikipedia has a page about the engine.

Via Flight Aware