http://www.aptera.com

The real deal about Aptera's Milage
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With the All Electric Apterea, it is very easy to figure out the
mileage range. The mileage is determined by the distance you can
drive, under normal circumstances, until the batteries are effectively
drained. In the case of the first Aptera typ-1e, we have calculated
the range to be about 120miles.

With the Plug-in Electric Hybrid version of the Aptera(typ-1h) the
mileage of the vehicle is difficult to describe with one number. For
example, the Typ-1h can drive 40 to 60 miles on electric power alone.
Perhaps for such a trip, the engine may only be duty-cycled for a few
seconds or minutes. This would produce a fantastic number, an
incredible number that, though factually true, would have no useful
context, i.e. it's just a point on a graph.

An asymptotic decaying exponential is an accurate way to describe the
fuel mileage of the Typ-1h. For example driving say, 50 miles, one
might calculate a MPG number that's 2 or 3 times higher, say, 1000
MPG. As battery energy is depleted, the frequency of the engine duty
cycle is increased. More fuel is used. at 75 miles, the MPG might be
closer to 400 MPG. Again, we're using battery energy mostly, but
turning the engine on more and more. Just over 100 miles we're just
over 300 MPG, and just beyond 120 miles, we're around 300 MPG.

So why pick a number at 120 miles? Well, it's more than double of most
available plug-in hybrid ranges that achieve over 100 MPG. It's three
times the distance of the typical American daily commute. It's a
meaningful distance that represents the driving needs of 99% of
Americans on a daily basis. Sure, it's asymptotic, after 350-400 miles
it eventually plummets to around 130 MPG at highway speeds where it
will stay all day until you plug it back in and charge it up.

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