Following Musk's thinking... i'd really like to see that energy density volume vs mass chart adjusted for average vehicle weight. i.e see the total system, engi

Following Musk's thinking... i'd really like to see that energy density volume vs mass chart adjusted for average vehicle weight. i.e see the total system, engine, storage components and fuel converter etc. On that graph, compared to petrol, liquid hydrogen appears to be about 4x larger by volume but interestingly only 2/5ths of the weight. The electric motors are lighter sure, but then what about the mass and volume of the compressed storage tank and the fuel cell itself? difficult to know if it starts to gain on IC engine again. lots of questions that make that graph feel pretty meaningless.