Rob,
The gas systems fitted to cars definitely produce less greenhouse gas than petrol or diesel. That goes for specific built engines such as the Ford Taxis here in Australia and after market add-on kits.
The add-ons can be attached to carburettor vehicles using straight gas or dual fuel and injected vehicles using both with the same results. The mixture sensing units are very sophisticated.
I think that dual fuel systems would be the go in Canada with either manual or automatic changeover to gas during the cruise period - maybe a heater system for the gas is called for but it would probably be pretty simple to devise.
I am interested in your comments that there is no shortage of fuel in Canada. If we continue to use petrol without milking everything out of it eg LPG we are just going faster down the international slippery slope - Canada is not an island. Your comments about emissions show you care about this aspect like most of us - gas is a way to reduce them. With your pioneering experience with gas you should be a salesman for it !???
Lang
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