Quote:
Originally Posted by EagleTed
As people movers they're grossly inefficient, unless Americans adopt the 3rd world MO of packing them in and having "riders" hang off the sides and sit on the top of cars.
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There are other ways to improve efficiency besides "packing them in". Regenerative braking, for example, has made great strides in recent years. But you do need to have relatively high ridership to have good efficiency numbers. The biggest challenge is getting Americans out of their cars.