The HiHy is 288v at 6.5Ah which is 1872Wh - but that's neither here nor there in comparison to the FEH. I've driven my HiHy at nearly 50mph with the ICE shut down (on level road and already up to speed). The HiHy is bigger, more capacity, and can tow 3500# - which helps on the farm. The acceleration, when needed, is great - as well as showing off those Expeditions (use to own one) who glance down their nose at you at the lights - and you leave them behind, while they try to catch up burning at a rate of less than 10mpg.....