And people used to think I was nuts when I converted mine to dual fuel!
Back then LPG was 18c a litre compared to Petrol @ 38c a litre!
Today LPG is 42c a litre and Petrol $1.32 so it still makes good sense!
<edit>(Damn that's $99 to fill the Supra with petrol these days! I remember buying beaters for less than $100 that had half a tank full!)