We're cooking with gas!!

[Bluebottle]

As of today both our main cars, a Quantum H4 and a 2002 Toyota Previa, are duel-fuel- LPG and petrol. The Quantum was finished today and has a 55 litre tank in the boot and the bus was done last week with a 60 litre tank underneath the back end where the spare wheel normally goes. We've already done 400 miles in the Previa and so far have been most impressed with the conversion. Startin the engine is always done with petrol and the switch over to LPG happens automaticaly when it reaches the right temperature, usually only a few seconds after startup, more in colder weather. There seems to be a slight loss of torque but it is only very slight.
We reckon it'll pay for itself in about 2 years and, because we keep our cars for many years, we're going to save much more than we spent on the conversions (Until the Chancelor decides to tax the stuff the same as petrol!). Although it's still using fossil fuel the exhaust is very clean.
Anyone else running LPG cars?