TOPIC: LEHR outboards

Anybody here heard of the new propane powered Outboards by LEHR.
Right know they have a 2.5 - 5 and a 9.9hp 4 stroke outboard. They are working on higher hp models right now. If they pan out I'm considering the 25hp for my pontoon.
Check them out. Might work out on our Glassics that are used on enviormental lakes.
Next generation to the Homelite.