It has as much power as 12-cylinder engine and its fuel consumption is very high. Maybe 20 litres per 100 km.
1.3 litre rotary makes 250 horse powers.
Just for a bigger variety of things in game.
But… can we have jet turbines?
When Z-levels are implemented? Yes.
…Cataclysm may be the first ASCII flight simulator on the market. Good market ploy.
Aaah, CataDDA 1.0 and Flight Simulator 25, what a lan party. 
But I was talking about car conbustion engine. Like those on Mazda RX8.
Rotary or not, I’m pretty sure DDA doesn’t even have inline engines. All vees.