Well, the importance of the direction the major engine manufacturers are going, to replace 18 wheelers diesel with hydrogen power, even retro fitting older engine compartments of 18 wheelers or even refitting diesel engines to hydrogen power as has been done with CNG fuel, is a way some of us, bus conversion busnuts, may be able to make our busses live a longer life. As opposed to donating our beauties to a new division of the bus museums, the bus conversion section of the bus museums.