While browsing the net this morning I've come across this LPG equipped Maxima for sale in Poland. The install looks pretty clean and I'm wondering how much it would cost to outfit US spec Maxima with this technology?

A quick Google search came up with this kit for Nissan vehicles
http://www.lpg-kits.com/nissan.htm

http://www.lpg-kits.com/vogas6.htm

 

This... looks interesting, sorta off topic, but I wonder what the performance of the car is going to be like.
I have no idea how LPG burns and what not, so I'm going to be Wikipedia-ing this later...

 

Pretty cool. I know many cars over seas use propane but I doubt it can get too popular here.

 

LPG has 16.25% less energy density and produces 19% less CO2. This is based on an 87 Octane gas and a LPG mix of 60% propane and 40% butane.

http://en.wikipedia.org/wiki/Autogas
http://en.wikipedia.org/wiki/Gasoline