[Boundless]

> Exchanging propane tanks would certainly be faster
> than waiting 8 hours to refill your NG tank.

No range, tho. It might only get you to the next 7-11.

I suspect the home fueling gizmo liquifies the NG to
get the energy density up to a reasonable value for a
modest size on-board tank.

>> ... costs about 3.75 cents per mile to fuel.

I gotta wonder if ALL the costs were accounted for in
that reported $/mile figure. Not just the NG expense,
but the power to run the fueler, the lease on the
fueler, and an adjustment (could be up or down) for
unique vehicle maintenance issues.

Our VW diesel runs 5.3 cents/mile for fuel (and has a
500 mi range). That 3.75c/mi is not that attractive.
I suspect a diesel-electric hybrid with regen brakes
and solar assist could easily best this Honda gassy.

[Southack]

The new deisel technology is quite nice.

[El Gato]

I suspect a diesel-electric hybrid with regen brakes and solar assist could easily best this Honda gassy.

Yes, but it would cost a whole lot more. More equipment. A more expensive engine to produce, the motor/generators, the control electronics, the batteries, well you get the picture. The batteries would end up making it heavier, thus requiring heavier springs and shocks. You might not get all that much better $/mile, especially if considering total cost of ownership (more stuff to break as well as higher initial cost)