> so a total plug to wheels efficiency of less than 40%. In the real world, it will be far less efficient than that (probably 25% at best). > That vs the typic

> so a total plug to wheels efficiency of less than 40%. In the real world, it will be far less efficient than that (probably 25% at best). > That vs the typical plug to wheels efficiency of around 60% in today's electric vehicles. 1) Just to add a point of comparison, current ICE engines have an efficiency of around 25-35%, so while 25% sounds bad, that's the technology we've been putting up with for a century. But obviously, new technologies ought to be more efficient. 2) Speaking of efficiency, here we are talking about plug-to-wheel efficiencies. The true useful efficiency of a car is the ability to move you to your destination. So adding in the "weight efficiency" of 5-10%, given a 1-2t car and a 100kg charge (based on average 1.5 people occupancy in a car), the efficiency drops to ~1% for ICE/hydrogen cars and ~3% for electric cars. Please consider using lighter cars, a lot more gains can be achieved that way.