I have owned RX-8 which was at the time perhaps only rotary engine car. Here's the thing... its cool engine and makes that great fun noise BUT its very inefficient + strictly requires premium gas and has a very short life. Ours was under warranty until 50K miles and engine died out exactly then. While searching the forums it appeared that this was rather common issue. So cost of the car alone was 0.5 cents per every mile driven, + expensive gas + maintenance.