[RBS] Anyone convert their car to "gaz"?

[Dina & Chaim Stepelman]

Has anyone looked into (or actually gone through with) converting
their car from gasoline/delek/benzene to gas (or, "gaz", a.k.a. LPG -
liquid petroleum gas)?  Seems to have all the advantages (much cheaper
than gasoline, safer - yes, safer, less wear on the engine, better for
the environment, recommended by the misrad hatachbura) and almost no
drawbacks (takes up a chunk of the trunk).
If you have any other worthwhile information, I would be very
interested in hearing from you.

Thanks!
Chaim