Shell say that within 5 years there will be H2 pumps at all their filling stations. They will make the Hydrogen at the flying station using water and electricity. Whilst most H2 cars will use a fuel cell and therefore be electric hybrids it is perfectly possible to run a V8 petrol engine on Hydrogen, in exactly the same way as LPG. SO... convert the +8? Why not?
Peter
Why not? Well for a start, liquid hydrogen has one quarter of the energy of petrol so you will either need a tank 4 times as big or call at the filling station 4 times as often. Secondly, at room emperateure liquid hydrogen turns into gas very rapidly. So even th slightest leak will produce a plume of gas unlike petrol. Thirdly hydrogen as a much lower ignition energy so a tiny spark that wont set petrol alight will cause hydrogen to explode. Fourth, you may well be able to use the same sort of engine as for petrol but you wont be able to use the same engine - converting the plus 8 will require new engine, new tank, new pipes, new electronic controls. And even then you will be driving along on top of a bomb.
