Three Cheers for Orkney

[ppppenguin]

Ah yes - Duh! 80 not 800kg!  Still like taking a hefty elderly relative with you everywhere you go...
J

It's not 80kg of dead wieight. It does laod levelling and kinetic energy recovery. It takes energy to accelerate that 80kg and drag it up hills but you get most of it back when going downhill or braking. It also relieves the petrol engine from working ineffiicently when accelerating from standstill.

I suspect it more than pays its way except perhaps when cruising on the motorway. Even then, on the flat at constant speed the extra mass makes little difference.