I think Hybrid Synergy Drive is a fantastic system, but Toyota forgot to up the battery capacity along with the weight of the car they put it in. If they bumped the battery by almost 60% when they bumped the car weight by 60%, there would be no complaints. I think this is why the FoMoCo SUVs can get ~30mpg while the Highlander gets low 20s. Ford used a 330V battery while Toyota used a lower voltage and a boost converter. Cobb, you know better than most what a difference extra capacity makes. For all of the advantages of Toyota's system, they can be eliminated with a bigger battery. It's that simple.
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